One verse

Srimad Bhagavatam 10.11.37

10.11.37

एवं व्रजौकसां प्रीतिं यच्छन्तौ बालचेष्टितै: । कलवाक्यै: स्वकालेन वत्सपालौ बभूवतु: ॥ ३७ ॥

evaṁ vrajaukasāṁ prītiṁ yacchantau bāla-ceṣṭitaiḥ kala-vākyaiḥ sva-kālena vatsa-pālau babhūvatuḥ

evam
in this way
vraja-okasām
to all the inhabitants of Vraja
prītim
pleasure
yacchantau
giving
bāla-ceṣṭitaiḥ
by the activities and pastimes of childhood
kala-vākyaiḥ
and by very sweet broken language
sva-kālena
in due course of time
vatsa-pālau
to take care of the calves
babhūvatuḥ
were grown up

In this way, Kṛṣṇa and Balarāma, acting like small boys and talking in half-broken language, gave transcendental pleasure to all the inhabitants of Vraja. In due course of time, They became old enough to take care of the calves.