When Sri Chaitanya Mahaprabhu received the sannyas mantra from Kesava Bharati, he first whispered the mantra into the ear of Kesava Bharati. He said, "Is this the mantra that you will give me? I have heard it in a dream, 'tat tvam asi. '" The common understanding of this mantra is "you are that" (you are Brahman ). Murari Gupta revealed to Sri Chaitanya Mahaprabhu another, more acceptable meaning of this mantra, which Chaitanya Mahaprabhu in turn gave to Kesava Bharati: "You are his." It is considered that at that time Sri Chaitanya initiated his spiritual master into the Vaisnava conception of this mantra and then received the mantra back.