Mahabharata 13.130.6

त्रिकालमभिषेकार्थः पितृदेवार्चनं क्रियाअग्निहोत्रपरिस्पन्द इष्टिहोमविधिस्तथा

trikālamabhiṣekārthaḥ pitṛdevārcanaṃ kriyāagnihotraparispanda iṣṭihomavidhistathā

Our plain-language meaning of this verse is waiting for scholar review.