advaita-ācārya-gosāñi - Advaita Ācārya; sākṣāt īśvara - directly the Supreme Personality of Godhead; tāṅra saṅge - by His association; āmāra - My; mana - mind; ha-ila - has become; nirmala - purified.

“Nevertheless, My mind has become purified because I have associated with Advaita Ācārya, who is directly the Supreme Personality of Godhead.