vastutaḥ - in fact; sarasvatī - mother Sarasvatī; aśuddha - impure; śloka - verse; karāila - caused him to compose; vicāra-samaya - at the time of reviewing; tāṅra - his; buddhi - intelligence; ācchādila - covered.

Sarasvatī had in fact induced the champion to compose his verse in an impure way. Furthermore, when it was discussed she covered his intelligence, and thus the Lord’s intelligence was triumphant.