aḿshivavaktrebhyoh gataiṋca Girijáshrutao;
Mataiṋca Vásudevasya tasmádágama ucyate.
That is to say, “This Tantra, or Ágama Shástra, was actually composed by Vásudeva [Krśńa, who was considered Aryan], and Shiva only revealed it to Párvatii.” Áre Bábá!(11) – if Vásudeva had at all been the propounder of this doctrine, why on earth would He have put it into the mouth of the non-Aryan Shiva instead of saying it Himself? In the beginning the Aryans used to recognize the superiority of Tantra sádhaná but practise it in secret; but after acknowledging Shiva, they openly declared themselves to be Tantrics.
By Prabhat Ranjan Sarkar on May 1959, RU, Muzaffarpur, Published in: chapter: Tantra and IndoAryan Civilization