One verse

Srimad Bhagavatam 9.6.2

9.6.2

रथीतरस्याप्रजस्य भार्यायां तन्तवेऽर्थित: । अङ्गिरा जनयामास ब्रह्मवर्चस्विन: सुतान् ॥ २ ॥

rathitarasyaprajasya bharyayam tantave ’rthitah angira janayam asa brahma-varcasvinah sutan

rathitarasya
of Rathitara
aprajasya
who had no sons
bharyayam
unto his wife
tantave
for increasing offspring
arthitah
being requested
angirah
the great sage Angira
janayam asa
caused to take birth
brahma-varcasvinah
who had brahminical qualities
sutan
sons.

Rathitara had no sons, and therefore he requested the great sage Angira to beget sons for him. Because of this request, Angira begot sons in the womb of Rathitara’s wife. All these sons were born with brahminical prowess.