One verse

Srimad Bhagavatam 1.3.12

1.3.12

तत: सप्तम आकूत्यां रुचेर्यज्ञोऽभ्यजायत । स यामाद्यै: सुरगणैरपात्स्वायम्भुवान्तरम् ॥ १२ ॥

tatah saptama akutyam rucer yajno ’bhyajayata sa yamadyaih sura-ganair apat svayambhuvantaram

tatah
after that
saptame
the seventh in the line
akutyam
in the womb of Akuti
ruceh
by Prajapati Ruci
yajnah
the Lord’s incarnation as Yajna
abhyajayata
advented
sah
He
yama-adyaih
with Yama and others
sura-ganaih
with demigods
apat
ruled
svayambhuva-antaram
the change of the period of Svayambhuva Manu.

The seventh incarnation was Yajna, the son of Prajapati Ruci and his wife Akuti. He controlled the period during the change of the Svayambhuva Manu and was assisted by demigods such as His son Yama.