CC Ādi 17.20
‘harer nāma’ ślokera kaila artha vivaraṇa
After this incident the Lord ate raw rice given by Śuklāmbara Brahmacārī and explained very elaborately the import of the “harer nāma” śloka mentioned in the Bṛhan-nāradīya Purāṇa.
Śuklāmbara Brahmacārī resided in Navadvīpa on the bank of the Ganges. When Śrī Caitanya Mahāprabhu was dancing in ecstasy, he approached the Lord with a begging bag containing rice. The Lord was so pleased with His devotee that He immediately snatched the bag and began to eat the raw rice. No one forbade Him, and thus He finished the entire supply of rice.