Markandeyapurana 32.36

32.36

tasmāt sampūjayet bhaktyā svapitṝn putra mānavaḥ /
kāmānabhīpsan sakalān pāpāccātmavimocanam //

Let a man therefore, my son, worship his own pitṛs in faith, hoping to gain all his wishes and his own deliverance from evil. Men’s pitṛs, when delighted with śrāddhas, please the Vasus, the Rudras and the Ādityas, the constellations, the planets and the stars. The pitṛs, when delighted with śrāddhas, bestow long life, wisdom, wealth, knowledge, Svarga, final emancipation from existence, and joys and sovereignty. I have declared to thee, my son, the śrāddha ceremony as it has been expounded: hear, my child, the praise of the Voluntary Śrāddhas according to the various days on which they are performed.