CC Madhya 15.127

mahā-vidagdha rājā, sei saba jāne
mukundere haila tāṅra ‘mahā-siddha’-jñāne
Word for word: 
mahā-vidagdha — highly intelligent; rājā — the King; sei — he; saba jāne — knows everything; mukundere — upon Mukunda; haila — was; tāṅra — his; mahā-siddha-jñāne — calculation as the most perfect devotee.
Translation: 
“Being extraordinarily intelligent, the King could understand the whole affair. In his estimation, Mukunda was a most uncommon, exalted, liberated personality.