Skandapurana 1.4.11.143

1.4.11.143

yaśca taṃ pitaraṃ rudraṃ tyaktvā mātaramaṃ bikām..
vartate'sau svapitaraṃ tyaktodapitṛpiṃḍakaḥ..
yasya rudrasya māhātmyaṃ śatarudrīyamuttamam.. 13.143 ..

And he who lives having abandoned that father Rudra and mother Ambikā,
is one who has abandoned his own father, offering balls of rice and water [elsewhere].
Listen to the supreme Śatarudrīya, the māhātmya of Rudra,