Garudapurana 1.83.29

1.83.29

dakṣiṇe mānase śrāddhī brahmalokaṃ pitṝnnayet /
svagadvāre naraḥ śrāddhī brahmalokaṃ nayetpitṝn /
bhīṣmatarpaṇakṛttasya kūṭe tārayate pitṝn /
gṛdhreśvare tathā śrāddhī pitṝṇāmanṛṇo bhavet //

The performer of the ancestral rite at Dakṣiṇa Mānasa leads the ancestors to the world of Brahmā; / the man performing the ancestral rite at Svargadvāra leads the ancestors to the world of Brahmā; / one who performs the libation to Bhīṣma on its peak delivers his ancestors; / and the performer of the ancestral rite at Gṛdhreśvara becomes free of debt to the ancestors.