Śrīmad-Bhāgavatam · Text 3.1.34
Who is speaking and story frame
अपिस्विदास्ते भगवान् सुखं वो
य: सात्वतां कामदुघोऽनिरुद्ध: ।
यमामनन्ति स्म हि शब्दयोनिं
मनोमयं सत्त्वतुरीयतत्त्वम् ॥ ३४ ॥
apisvid āste bhagavān sukhaṁ vo
yaḥ sātvatāṁ kāma-dugho ’niruddhaḥ
yam āmananti sma hi śabda-yoniṁ
mano-mayaṁ sattva-turīya-tattvam
May I inquire whether Aniruddha is doing well? He is the fulfiller of all the desires of the pure devotees and has been considered from yore to be the cause of the Ṛg Veda, the creator of the mind and the fourth plenary expansion of Viṣṇu.
Read Śrīla Prabhupāda's purport on Vedabase.io