Skandapurana 5.35.31

5.35.31

tataḥ sarvāṇi pīṭhāni yāni saṃti dharātale ..
tāni tatrānayāmāsa maṃtraśaktyā mahāmuniḥ .. 31 ..

Then all the sacred seats that exist upon the surface of the earth, / those the great sage brought there through the power of mantras.