The Srimad Bhagavatam has a Edition of the story, except Vishnu deceives him in a special way: in lieu of turning into Mohini and attracting him, he turns right into a younger student and charms him together with his words: The beej mantra “LAM” is connected to the basis chakra, https://cesareuixm.fare-blog.com/37802152/considerations-to-know-about-yantra