One verse

Srimad Bhagavatam 10.37.5

10.37.5

स: लब्धसंज्ञ: पुनरुत्थितो रुषा व्यादाय केशी तरसापतद्धरिम् । सोऽप्यस्य वक्त्रे भुजमुत्तरं स्मयन् प्रवेशयामास यथोरगं बिले ॥ ५ ॥

saḥ labdha-saṁjñaḥ punar utthito ruṣā vyādāya keśī tarasāpatad dharim so ’py asya vaktre bhujam uttaraṁ smayan praveśayām āsa yathoragaṁ bile

saḥ
he, Keśī
labdha
regaining
saṁjñaḥ
consciousness
punaḥ
again
utthitaḥ
rose up
ruṣā
in anger
vyādāya
opening (his mouth) wide
keśī
Keśī
tarasā
rapidly
apatat
ran
harim
toward Kṛṣṇa
saḥ
He, Lord Kṛṣṇa
api
and
asya
his
vaktre
in the mouth
bhujam
His arm
uttaram
left
smayan
smiled
praveśayām āsa
placed within
yathā
as
uragam
a snake
bile
(enters) within a hole

Upon regaining consciousness Keśī angrily got up, opened his mouth wide and again rushed to attack Lord Kṛṣṇa. But the Lord just smiled and thrust His left arm into the horse’s mouth as easily as one would make a snake enter a hole in the ground.