One verse

Srimad Bhagavatam 10.15.36

10.15.36

तत: कृष्णं च रामं च ज्ञातयो धेनुकस्य ये । क्रोष्टारोऽभ्यद्रवन् सर्वे संरब्धा हतबान्धवा: ॥ ३६ ॥

tataḥ kṛṣṇaṁ ca rāmaṁ ca jñātayo dhenukasya ye kroṣṭāro ’bhyadravan sarve saṁrabdhā hata-bāndhavāḥ

tataḥ
then
kṛṣṇam
at Lord Kṛṣṇa
ca
and
rāmam
Lord Rāma
ca
and
jñātayaḥ
the intimate companions
dhenukasya
of Dhenuka
ye
who
kroṣṭāraḥ
the asses
abhyadravan
attacked
sarve
all
saṁrabdhāḥ
enraged
hata-bāndhavāḥ
their friend having been killed

The other ass demons, close friends of Dhenukāsura, were enraged upon seeing his death, and thus they all immediately ran to attack Kṛṣṇa and Balarāma.