sei haite - from that; īśvara-purī - Īśvara Purī; premera sāgara - the ocean of ecstatic love; rāmacandra-purī - Rāmacandra Purī; haila - became; sarva-nindā-kara - critic of all others.

Thus Īśvara Purī became like an ocean of ecstatic love for Kṛṣṇa, whereas Rāmacandra Purī became a dry speculator and a critic of everyone else.