
O you who believe! Spend of that with which We
have provided for you, before a Day comes when there will be no
bargaining, nor friendship, nor intercession. And it is the disbelievers
who are the wrongdoers. (2: 254)
--
"Oh Allah, I seek refuge in You lest I misguide others, or I am misguided by others, lest I cause others to err or I am caused to err, lest I abuse others or be abused, and lest I behave foolishly or meet with the foolishness of others".
(Abu-Dawud, Ibn Majah, Nasa'i, At-Termithi see also Al-Albani, Sahih At-Tirmithi 3/152 and Sahih Ibn Majah 2/336)