Śrīmad-Bhāgavatam · Text 10.8.20
Who is speaking and story frame
श्रीशुक उवाच
इत्यात्मानं समादिश्य गर्गे च स्वगृहं गते ।
नन्द: प्रमुदितो मेने आत्मानं पूर्णमाशिषाम् ॥ २० ॥
śrī-śuka uvāca
ity ātmānaṁ samādiśya
garge ca sva-gṛhaṁ gate
nandaḥ pramudito mene
ātmānaṁ pūrṇam āśiṣām
Śrīla Śukadeva Gosvāmī continued: After Garga Muni, having instructed Nanda Mahārāja about Kṛṣṇa, departed for his own home, Nanda Mahārāja was very pleased and considered himself full of all good fortune.
Read Śrīla Prabhupāda's purport on Vedabase.io