One verse

Srimad Bhagavatam 10.13.27

10.13.27

इत्थमात्मात्मनात्मानं वत्सपालमिषेण स: । पालयन् वत्सपो वर्षं चिक्रीडे वनगोष्ठयो: ॥ २७ ॥

ittham ātmātmanātmānaṁ vatsa-pāla-miṣeṇa saḥ pālayan vatsapo varṣaṁ cikrīḍe vana-goṣṭhayoḥ

ittham
in this way
ātmā
the Supreme Soul, Kṛṣṇa
ātmanā
by Himself
ātmānam
Himself again
vatsa-pāla-miṣeṇa
with the forms of cowherd boys and calves
saḥ
Kṛṣṇa Himself
pālayan
maintaining
vatsa-paḥ
tending the calves
varṣam
continuously for one year
cikrīḍe
enjoyed the pastimes
vana-goṣṭhayoḥ
both in Vṛndāvana and in the forest

In this way, Lord Śrī Kṛṣṇa, having Himself become the cowherd boys and groups of calves, maintained Himself by Himself. Thus He continued His pastimes, both in Vṛndāvana and in the forest, for one year.