One verse

Srimad Bhagavatam 10.34.4

10.34.4

ऊषु: सरस्वतीतीरे जलं प्राश्य यतव्रता: । रजनीं तां महाभागा नन्दसुनन्दकादय: ॥ ४ ॥

ūṣuḥ sarasvatī-tīre jalaṁ prāśya yata-vratāḥ rajanīṁ tāṁ mahā-bhāgā nanda-sunandakādayaḥ

ūṣuḥ
they stayed
sarasvatī-tīre
on the bank of the Sarasvatī
jalam
water
prāśya
subsisting on
yata-vratāḥ
taking strict vows
rajanīm
the night
tām
that
mahā-bhāgāḥ
the greatly fortunate ones
nanda-sunandaka-ādayaḥ
Nanda, Sunanda and the others

Nanda, Sunanda and the other greatly fortunate cowherds spent that night on the bank of the Sarasvatī, strictly observing their vows. They fasted, taking only water.