On the midnight of Adhika Ashadha krishna Chaturdashi the Tattva Padartha is transferred from the old deity to the new deities .
Shatapatha Brahmana defines Sutram as the sacred thread (SB XII.ii.3), the sacred thread belonging to the first-class Brahmins (SB V.x.16), the power to act (SB XI.iii.37), the sutra-tattva (SB XI.xxviii.16), the mahat-tattva distinguished by the power of action (SB XI.ix.19), the function of Pradhana or the subtle cause of material nature (SB XI.xii.19), or the first transformation of nature (Prakrti), endowed with the potency of activity (SB XI.xxiv.6).
Srivasa Thakura, close associate of Chaitanya Mahaprabhu and a member of the Pancha Tattva