6.91
tabu ta’ isvara-jnana na haya tomara
isvarera maya ei--bali vyavahara
SYNONYMS
tabu ta’-still, however; isvara-jnana—knowledge of the Supreme Personality of Godhead; na—not; haya—there is; tomara—your; isvarera—of the Lord; maya—the illusion; ei—this; bali—saying; vyavahara—the general term "Despite directly perceiving the symptoms of the Supreme Lord in the body of Sri Caitanya Mahaprabhu, you cannot understand Him.
This is commonly called illusion.
PURPORT
Gopinatha Acarya is pointing out that Sarvabhauma Bhattacarya had already seen uncommon symptoms of ecstasy in the body of Sri Caitanya Mahaprabhu.
These uncommon symptoms of ecstatic love indicated the Supreme Person, but despite having seen all these symptoms, the Bhattacarya could not understand the Lord’s transcendental nature.
He was considering the Lord’s pastimes to be mundane.
This was certainly due to illusion.