CC Madhya 10.104

prabhura sannyāsa dekhi’ unmatta hañā
sannyasa grahaṇa kaila vārāṇasī giyā
Synonyms: 
prabhura — of Lord Śrī Caitanya Mahāprabhu; sannyāsa dekhi’ — when he saw the sannyāsa order; unmatta hañā — he became just like a madman; sannyāsa grahaṇa kaila — he also accepted the renounced order of life; vārāṇasī — to Vārāṇasī; giyā — going.
Translation: 
After seeing that Śrī Caitanya Mahāprabhu accepted the renounced order, Puruṣottama Ācārya became like a madman and immediately went to Vārāṇasī to take sannyāsa.