Some time during the Nabadwip years, Chaitanya Mahaprabhu was heard weeping and calling out for a man none of the devotees present had met. Pundarika, He said, was His father; when would He see him again. The devotees asked who this was, and were told that a great Vaishnava named Pundarika Vidyanidhi would shortly be coming to Nabadwip.
Pundarika Vidyanidhi was from the east, like so many of them — from Mekhala, near Hathazari in the Chittagong district. His father is named as Banesvara, or by another account Shuklambara Brahmachari, and his mother as Gangadevi. The family belonged to the Varendra brahmanas and had at some point been put out of caste in one of the periodic quarrels between the Varendra and Radhiya groups, so that its social standing was not what its learning warranted. Kavi Karnapura identifies him as Vrishabhanu, the father of Srimati Radharani, in Krishna's Vrindavana pastimes, which is why Mahaprabhu addressed him as father and gave him the title Premanidhi. Krishnadasa Kaviraja names him the third great branch of the Chaitanya tree and records that in his absence the Lord would sometimes weep.
None of this was visible when he arrived. Pundarika Vidyanidhi came to Nabadwip in the character of a wealthy man of the world and made no attempt to look like anything else. Mukunda Datta, who had lived in Chittagong and knew him, told Gadadhara one day that he was going to introduce him to a most exceptional Vaishnava, and took him along.
What Gadadhara found was a man reclining on an expensive bed under a three-tiered canopy, on sheets described in the accounts as white as the foam of milk, with scented pan in a jewelled box within reach, brass spittoons on either side and two servants fanning him. Pundarika received them cordially and talked. Gadadhara — twenty years old, a brahmachari, indifferent to comfort since childhood, and by temperament inclined to take externals seriously — could not reconcile any of it with what he had been told. Srila Prabhupada, summarising the episode, puts the young man's mistake bluntly: Gadadhara Pandit at first took Pundarika Vidyanidhi for an ordinary pounds-and-shillings man.
Mukunda saw the doubt on his face and did the one thing that would settle it. He recited, aloud, the verse from the Third Canto of the Bhagavatam in which Uddhava marvels that Krishna gave the position of a nurse to the witch Putana, who had come with poison on her breast to murder Him, and asks where a more merciful shelter than that is to be found. The effect on Pundarika Vidyanidhi was instantaneous and total. He cried out and fell to the ground; the whole range of ecstatic symptoms the Vaishnava manuals catalogue appeared on his body; he tore the fine bedding to pieces, wailing that the Lord was infinitely merciful and yet had withheld His mercy from him; several men together could not restrain him; and when the storm finally passed he was unconscious for some hours.
Gadadhara understood at once what he had done. What he had committed was not a private misjudgement but, in Vaishnava terms, an offence at the feet of a devotee — the category of fault the tradition treats most gravely of all. The remedy came from Mahaprabhu. Here the sources give the sequence slightly differently: Srila Prabhupada's note has Gadadhara corrected by Chaitanya Mahaprabhu and becoming Pundarika Vidyanidhi's disciple in consequence; the fuller Chaitanya-bhagavata narrative has the recitation itself do the work of exposing the mistake, with Mahaprabhu afterwards advising Gadadhara that the way to be free of the offence was to take initiation from the man he had misjudged. The two accounts agree on everything that matters. When Pundarika Vidyanidhi came back to external consciousness — calm again, and giving no sign of what had just happened — he initiated Gadadhara Pandit, and remained his spiritual master for life.
There is a coda at Jagannatha Puri. Krishnadasa Kaviraja records that in a later year Pundarika Vidyanidhi stayed on in Puri when the other Bengali devotees went home, that he was on terms of close friendship with Svarupa Damodara Goswami, and that he initiated Gadadhara Pandit a second time. He also records, in the same breath, that on the day of Odana-shashthi Pundarika Vidyanidhi saw a starched cloth put on Lord Jagannatha, thought critically of the temple servants for it, and was that night visited by Jagannatha and Balarama, who smilingly slapped his cheeks until they swelled — and that he was privately delighted. The tradition, in other words, does not present him as flawless. It presents him as someone whose devotion was real and whose exterior was misleading in both directions.
The lesson the tradition draws from the episode is a specific one, and it is easy to get half right. It is not that opulence is a qualification, or that renunciation does not matter; Gadadhara Pandit himself lived austerely to the end of his life and took a vow of residence at Puri that he never broke. It is that external renunciation is not the instrument by which a Vaishnava is measured, because it measures the wrong thing. What Mukunda's verse revealed was not hidden simplicity beneath the silk — the silk was real — but a condition of the heart that the silk had nothing to do with. The corresponding fault, judging a devotee by his circumstances, is named in the Vaishnava literature as an offence rather than merely an error, and this incident is the story most often told to illustrate it.
It is worth adding that Gadadhara appears to have absorbed the lesson about himself as well. Late in his life at Puri, when the learned Vallabha Bhatta pressed him for initiation, he refused, saying that the work of acting as a spiritual master was not possible for him — and accepted the disciple only afterwards, when Mahaprabhu gave permission. The man who had once been too quick to assess another Vaishnava had become extremely slow to assess himself. His long service at Puri is described here.