Lexicallyتَحَیَّۃ 'Tahiyyah' means sayings حَیَّکَ اللہ :'Hayyakallah', that is, 'may Allah keep you alive'. In pre-Islam Arabia, when people met, they used to greet each other by saying 'Hayyakallah' or An` amallahu bika ` aynan' or ` An` im sabahan' or other expression of this nature. When Islam came, it changed this style of greeting and replaced it with a standard form of greeting which is السلام علیکم 'As-Salamu Alaikum` Commonly, though incompletely, translated in English as 'peace be on you', the greeting means: 'May you remain safe from every pain, sorrow and distress.'
In Ahkam al-Qur'an, Ibn ` Arabi says: The word Salam is one of the good names of Allah Almighty and السلام علیکم As-Salamu Alaikum' means ; that is, Allah Almighty is your guardian and caretaker.
All civilized people around the world have the custom of saying something to express mutual familiarity or affection when they meet each other. If compared with these broadmindedly, the Islamic form of greeting will stand out significantly for its comprehensiveness because it does not simply restrict itself to an expression of affection alone. It rather combines it with the fulfillment of the demands of love and affection. It means that we pray to Allah that He keep you safe against all calamities and sorrows. Then, this is no bland prayer for long life alone as was the way with pre-Islam Arabs. Instead of that, here we have a prayer for good life, that is, a life which is secure against all calamities and sorrows. Along with it, the Islamic salam is an expression of the reality of our relation with Allah Almighty - that we, the greeter and the greeted, are all dependent on Allah Almighty needing Him all the time and no one can bring any benefit to someone else without His will and leave. Taken in this sense, this form of greeting is an act of worship in its own right and, quite functionally indeed, a medium of reminding a brother-in-faith of Allah Almighty, the object of his obedience and love.
Staying with this line of presentation, let us imagine a person praying to Allah that his acquaintance remain safe against all calamities and sorrows. When doing so, is it not that he is sort of making a promise as well that the person being greeted is safe against his own hands and tongue. In other words, he is saying that he, in his place, is the guardian and protector of the person's life, property and honour.
To sum up, it can be said that this Islamic form of greeting has a universal comprehensiveness as it is a medium of the remembrance of Allah while reminding the person greeted of Him. It is a vehicle of expressing love and affection for a brother-in-faith and, in fact, a wonderful prayer for him. Then, it also carries a commitment that the greeted will in no way face harm or discomfort from the greeter as it appears is a sound hadith where the Holy Prophet ﷺ said:
At this point one may fondly wish that Muslims would not utter the words of this greeting as some sort of habitual custom which commonly prevails among other people of the world. How beneficial it would be if this greeting is offered out of a full understanding of its reality which, perhaps, may turn out to be enough for the reform of whole community. This is the reason why the Holy Prophet ﷺ laid great emphasis on popularizing the practice of Muslims in greeting each other with salam, and he identified it as the best of deeds and took time to explain its merits, graces, blessings and rewards. In a hadith of Sahih Muslim narrated by Sayyidna Abu Hurairah ؓ the Holy Prophet ﷺ has been reported to have said:
''You cannot enter Paradise until you are a believer and your belief cannot be complete until you love each other. I tell you something which, if you put it in practice, will establish bonds of love among you all, and that is: Make salam a common practice among you which should include every Muslim, whether an acquaintance or a stranger."
Sayyidna ` Abdullah ibn ` Umar رضی اللہ تعالیٰ عنہما says that someone asked the Holy Prophet ﷺ : 'Out of the practices of Islam which is the worthiest?' He said: 'Feed people and spread the practice of salam, whether you know or do not know a person.' (Bukhari and Muslim)
A hadith from Sayyidna ` Abdullah ibn Masud ؓ عنہما appearing in Musnad al-Bazzar and al-Mu'jim al-Kabir of al-Tabarani reports that the Holy Prophet ﷺ said: 'Salam is one of the names of Allah Almighty with which He has blessed the people of the earth. So, make salam a common practice among you because, when a Muslim goes to a gathering of people and offers his salam to them, he is blessed with a station of distinction in the sight of Allah Almighty as he reminded everyone of Salam, that is, reminded everyone of Allah Almighty. If people in the gathering do not return his greeting, others will respond who are better than the people of this gathering, that is, the angels of Allah Almighty.'
The effect that those teachings of the Holy Prophets had on his noble Companions can be gauged from a narration about Sayyidna ` Abdullah ibn ` Umar ؓ who would frequently go to the bazaar just for the single purpose of having a chance to meet any Muslim there in the hope of offering salam to him and thus become deserving of the reward of an act of worship. Incidentally, he never intended to buy or sell anything while there. This narration from Sayyidna Tufayl ibn Ubayy ibn Ka'b ؓ appears in Mu'atta' of Imam Malik (رح) .
Verse 4:86 of the Holy Qur'an which says: 'And when you are greeted with a salutation, greet with one better than it, or return the same', was explained by the Holy Prophet ﷺ through his own action in the following manner. Once someone came to the Holy Prophet ﷺ and said: 'As-Salam, u Alaikum Ya Rasulallah' (peace be on you, 0 Messenger of Allah). While returning the greeting, he added a word and said: 'Wa Alaikumus-Salam wa Rahmatulah (And peace be on you, and the mercy of Allah). Then someone else came and offered his salam using the following words: 'As-Salamu Alaika Ya Rasulallah wa Rahmatullah.' In response, he added yet another word and said: 'Wa Alaikumus-Salem wa Rahmatullahi wa Barakatuh (And peace be on you too, and the mercy of Allah, and His blessings). Then came a third person. He combined all three saluta-tions in his initial salam and greeted him by saying the whole thing, that is: 'As-Sala-mu Alaik Ye Rasulallah wa Rahmatullahi wa Barakatuh.' In response, the Holy Prophet ﷺ said only one word 'Wa Alaik' (and on you). Disappointed in his heart, he said: 'Ya Rasulallah, ransomed be my parents for you, you said many words of prayer while returning the greeting of those who came before me. But, when I greeted you with all those words, you limited your response to 'wa 'alaik' (and on you).' He said: 'You left nothing for me to add in the response! Since you used up all those words in your initial salam, I found it sufficient to return your greeting on the principle of like for like in accordance with the teaching of the Qur'an.' This narration has been reported by Ibn Jarir and Ibn Abi Hatim ؓ with different chains of authorities.
There are three things we find out from this hadith: Words appearing in the verse under comment mean that a salam offered should be returned by adding more words to it. If someone says Assalamu Alaikum (peace be on you), you respond by saying Wa Alaikumus-Salam wa Rahmatullah (And peace be on you, and the mercy of Allah). If he says As-Sala-mu Alaikum wa Rahmatullah (peace be on you, and the mercy of Allah), then, in response, you say Wa Alaikumus-Salam wa Rahmatullahi wa Barakatuh (And peace be on you, and the mercy of Allah, and His blessings).
2. This addition of words is restricted to three words only as a masnun act, that is, conforming to the blessed practice of the Holy Prophet ﷺ . Going beyond that is not masnun. The logic behind it is obvious. The occasion for salam requires that the verbal exchange be brief. Any excess in this connection which interferes with ongoing business or which becomes heavy on the listener is not appropriate. Therefore, when the person visiting the Holy Prophet ﷺ combined all three words in his very initial salam, he elected to abstain from any further addition of words. This was further explained by Sayyidna ` Abdullah ibn ` Abbas ؓ by saying that the Holy Prophet ﷺ stopped the man who went beyond the limit of the three words with the following statement اِنِّ السَّلَامَ قَدِ انتَھٰی اِلَی البَرَکَۃِ (Mazhari from al-Baghawi). It means that salam ends at the word, barakah. Saying anything beyond that was not the practice of the blessed Prophet ﷺ . (Ibn Kathir)
It will be noticed that this verse very clearly states that returning a salam is obligatory but it is not explicit on the nature of offering a salam initially. However, in the Qur'anic expression إِذَا حُيِّيتُم (And when you are greeted .. ) there does lie a hint pointing towards this rule of conduct. That this statement is in the passive voice without identifying the subject precisely could be suggestive of salam being something all Muslims already do habitually and commonly.
The Musnad of Ahmad, al-Tirmidhi and Abu Dawud report that the Holy Prophet ﷺ said: 'Nearest to Allah is the person who is the first to offer salam.' So, from the emphasis on salam and its many merits you have learnt from the teachings of the Holy Prophet cited earlier, we get to understand that offering the initial salam has also been emphasized as part of the practice of the Holy Prophet ﷺ . According to Tafsir al-Bahr al-Muhit, the initial salam is actually a sunnah mu'akkadah (emphasized practice of the Prophet of Islam) as held by the majority of ` Ulama. And Hasan al-Basri (رح) said: السلام تطوع والرد فریضہ that is, 'the initial salam is voluntary while returning it is an obligation.'
Some more detailed explanations of this Qur'anic injunctions about salam and its answer have been given by the Holy Prophet ﷺ which the reader may wish to know briefly. According to a hadith in al-Bukhari and Muslim, the person riding should himself offer salam to the person walking; and the person walking should offer salam to the person sitting; and a small group of persons walking near a larger group should be the first to offer salam.
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