Skandapurana 5.225.9

5.225.9

prakarṣeṇa vrajedyasmāttasmātpretaḥ prakīrtitaḥ ..
putreṇa bhrātrā patnyā vā tasya kāryā sapiṃḍatā .. 9 ..

Because he departs violently (prakarṣeṇa vrajet), therefore he is declared a preta. / His sapiṇḍa status must be performed by a son, a brother, or a wife. / 9