Shiva Purana
पितृलोकं समासाद्यक्रमान्मुक्तो भवेन्मृतः । क्रियायुक्तदशभ्यश्च तपोयुक्तो विशिष्यते १४६ ।
By reaching the Pitrloka (the realm of ancestors) through proper rituals, the deceased is liberated. One who is engaged in spiritual practices and discipline, especially with tapas (austerities), is considered superior.
english translation
pitRlokaM samAsAdyakramAnmukto bhavenmRtaH । kriyAyuktadazabhyazca tapoyukto viziSyate 146 ।
hk transliteration by Sanscript