Garudapurana 3.12.67

3.12.67

pitṛmātṛdvijātīnāṃ harirūpatvacintanam /
asvatantreṇa rudreṇa hareraikyadicintanam //

conceiving father, mother, and twice-born castes to have the form of Hari;
thinking of identity of Hari with the non-independent Rudra;