Skandapurana 5.217.18

5.217.18

śrāddhe bhuktvātha dattvā vā yaḥ śrāddhaṃ kurutelpadhīḥ ..
svādhyāyaṃ pitarastasya yāvatsaṃvatsaraṃ nṛpa ..
vyarthaśrāddhaphalāḥ saṃtaḥ pīḍyaṃte kṣutpipāsayā .. 18 ..

That foolish man who, having eaten or having offered [oblations] at a śrāddha, performs recitation of the Veda, / his ancestors, O king, for a whole year, / having their śrāddha-fruit rendered futile, are tormented by hunger and thirst.