One verse

Srimad Bhagavatam 9.6.3

9.6.3

एते क्षेत्रप्रसूता वै पुनस्त्वाङ्गिरसा: स्मृता: । रथीतराणां प्रवरा: क्षेत्रोपेता द्विजातय: ॥ ३ ॥

ete ksetra-prasuta vai punas tv angirasah smrtah rathitaranam pravarah ksetropeta dvi-jatayah

ete
the sons begotten by Angira
ksetra-prasutah
became the children of Rathitara and belonged to his family (because they were born from the womb of his wife)
vai
indeed
punah
again
tu
but
angirasah
of the dynasty of Angira
smrtah
they were called
rathitaranam
of all the sons of Rathitara
pravarah
the chief
ksetra-upetah
because of being born of the ksetra (field)
dvi-jatayah
called brahmana (being a mixture of brahmana and ksatriya)

Having been born from the womb of Rathitara’s wife, all these sons were known as the dynasty of Rathitara, but because they were born from the semen of Angira, they were also known as the dynasty of Angira. Among all the progeny of Rathitara, these sons were the most prominent because, owing to their birth, they were considered brahmanas.