Garudapurana 2.45.1

2.45.1

śrīgaruḍamahāpurāṇam- 45
śrīviṣṇuruvāca /
pratyabdaṃ śrāddhamevaṃ te kathayāmi khageśvara /
pratyabdaṃ pārvaṇenaiva kuryātāṃ kṣetrajorasau //

Garuḍa Mahāpurāṇa—Chapter 45
Śrī Viṣṇu said:
I shall tell you about the annual śrāddha in this way, O King of Birds: / Every year the son of the field and the body-born son should perform it only according to the Pārvaṇa rite.