One verse

Srimad Bhagavatam 9.22.25

9.22.25

क्षेत्रेऽप्रजस्य वै भ्रातुर्मात्रोक्तो बादरायण: । धृतराष्ट्रं च पाण्डुं च विदुरं चाप्यजीजनत् ॥ २५ ॥

ksetre ’prajasya vai bhratur matrokto badarayanah dhrtarastram ca pandum ca viduram capy ajijanat

ksetre
in the wives and maidservant
aprajasya
of Vicitravirya, who had no progeny
vai
indeed
bhratuh
of the brother
matra uktah
being ordered by the mother
badarayanah
Vedavyasa
dhrtarastram
a son named Dhrtarastra
ca
and
pandum
a son named Pandu
ca
also
viduram
a son named Vidura
ca
also
api
indeed
ajijanat
begot.

Badarayana, Sri Vyasadeva, following the order of his mother, Satyavati, begot three sons, two by the womb of Ambika and Ambalika, the two wives of his brother Vicitravirya, and the third by Vicitravirya’s maidservant. These sons were Dhrtarastra, Pandu and Vidura.