One verse

Srimad Bhagavatam 3.20.2

3.20.2

क्षत्ता महाभागवत: कृष्णस्यैकान्तिक: सुहृत् । यस्तत्याजाग्रजं कृष्णे सापत्यमघवानिति ॥ २ ॥

ksatta maha-bhagavatah krsnasyaikantikah suhrt yas tatyajagrajam krsne sapatyam aghavan iti

ksatta
Vidura
maha-bhagavatah
a great devotee of the Lord
krsnasya
of Lord Krsna
ekantikah
unalloyed devotee
suhrt
intimate friend
yah
he who
tatyaja
abandoned
agra-jam
his elder brother (King Dhrtarastra)
krsne
toward Krsna
sa-apatyam
along with his one hundred sons
agha-van
offender
iti
thus.

Saunaka Rsi inquired about Vidura, who was a great devotee and friend of Lord Krsna and who gave up the company of his elder brother because the latter, along with his sons, played tricks against the desires of the Lord.