Śrīmad-Bhāgavatam · Text 3.24.43
Who is speaking and story frame
मनो ब्रह्मणि युञ्जानो यत्तत्सदसत: परम् ।
गुणावभासे विगुण एकभक्त्यानुभाविते ॥ ४३ ॥
mano brahmaṇi yuñjāno
yat tat sad-asataḥ param
guṇāvabhāse viguṇa
eka-bhaktyānubhāvite
He fixed his mind upon the Supreme Personality of Godhead, Parabrahman, who is beyond cause and effect, who manifests the three modes of material nature, who is beyond those three modes, and who is perceived only through unfailing devotional service.
Read Śrīla Prabhupāda's purport on Vedabase.io