ei-mata - in this way; daśa-dina - continuously for ten days; bhojana-kīrtana - eating and chanting; eka-rūpe - without change; kari' - doing; kare - does; prabhura - of the Lord; sevana - service.

For ten continuous days Advaita Ācārya held feasting and chanting in the evening. He served the Lord in this way without any change.