Bhagwad Gita
Chapter 10, Verse 6
महर्षयः सप्त पूर्वे चत्वारो मनवस्तथा।
मद्भावा मानसा जाता येषां लोक इमाः प्रजाः।।10.6।।
The seven great sages and before them the four other great sages and the Manus [progenitors of mankind] are born out of My mind, and all creatures in these planets descend from them.