Shiva Purana
तथा तु पितृकार्य्यार्थं कृतं श्राद्धं व्यवस्थितैः॥ तदा ज्ञानं च जातिं च क्रमात्प्राप्तं गुणोत्तरम्॥ ३६॥
They had performed the Śrāddha for the Pitṛs with due rituals. They retained memory of previous noble birth.
english translation
tathA tu pitRkAryyArthaM kRtaM zrAddhaM vyavasthitaiH॥ tadA jJAnaM ca jAtiM ca kramAtprAptaM guNottaram॥ 36॥
hk transliteration by Sanscript