Today is a very sacred day in our line. Sri Caitanya Mahaprabhu took sannyasa and began to search for his brother Visvarupa. While searching, on this day He found out that he was in Pandarapur, and that he had left his body. He had taken samadhi on the bank of the river Bhima. Then, on this day, though Mahaprabhu was observing Caturmasya-vrata very strictly for four months, He shaved his hair. Before this year, He never shaved for these four months, nor did He cut his nails. He observed all the rules and regulations of Caturmasya.
It is said that Sankararanya was the sannyasa name of Srila Visvarupa, who was the elder brother of Visvambhara (the original name of Sri Caitanya Mahaprabhu). Sankararanya expired in 1432 Sakabda (A.D. 1510) at Sholapur, where there is a place of pilgrimage known as Pandarapura. This is referred to in the Madhya-lila, Chapter Nine, verses 299 and 300.
(Srila A.C. Bhaktivedanta Swami Prabhupada. Sri Chaitanya Charitamrita Adi-lila 10:106 purport.)
Visvarupa was the elder brother of Gaurahari, Lord Sri Caitanya Mahaprabhu. When arrangements were being made for the marriage of Visvarupa, He took sannyasa and left home. He took the sannyasa name of Sankararanya. In 1431 Sakabda Era (A.D. 1509), He disappeared in Pandarapura, in the district of Sholapur. As an incarnation of Sankarshana, He is both the ingredient and immediate cause of the creation of this material world. He is nondifferent from Sri Caitanya Mahaprabhu, for the amsa and the amsi, or the part and the whole, are not different. As an incarnation of Sankarshana, Visvarupa belongs to the quadruple manifestation of catur-vyuha. In the Gaura-candrodaya it is said that Visvarupa, after His so-called demise, remained mixed within Sri Nityananda Prabhu.