rajara tuccha seva dekhi' prabhura tusta mana
sei ta' prasade paila 'rahasya-darsana'
rajara—of the King; tuccha—insignificant, menial; seva—service; dekhi'-seeing; prabhura—of Sri Caitanya Mahaprabhu; tusta—satisfied; mana—mind; sei—that; ta'-indeed; prasade—by mercy; paila—got; rahasya-darsana—seeing of the mystery of the activities.
Sri Caitanya Mahaprabhu was very satisfied to see the King accept the menial task of sweeping the street, and for this humility, the King received the mercy of Sri Caitanya Mahaprabhu. He could therefore observe the mystery of Sri Caitanya Mahaprabhu's activities.
The mystery of the Lord's activities is described by Srila Bhaktisiddhanta Sarasvati Thakura. Lord Jagannatha was astonished to see the transcendental dancing and chanting of Sri Caitanya Mahaprabhu, and He stopped His car just to see the dancing. Lord Caitanya Mahaprabhu then danced in such a mystical way that He pleased Lord Jagannatha. The seer and the dancer were one and the same Supreme Person, but the Lord, being one and many at the same time, was exhibiting the variegatedness of His pastimes. This is the meaning behind His mysterious exhibition. By the mercy of Sri Caitanya Mahaprabhu, the King could understand how both of Them were enjoying each other's activities. Another mysterious exhibition was Sri Caitanya Mahaprabhu's simultaneous presence in seven groups. By the mercy of Sri Caitanya Mahaprabhu, the King could understand that also.
Link to this page: https://prabhupadabooks.com/cc/madhya/13/60