Pracetassmriti 1.9: Nirṇayasindhu · Saṃvatsaradīdhiti · Abdadīdhiti +1

1.9

sapiṇḍīkaraṇād ūrdhvam ekoddiṣṭaṃ vidhīyate | aputrāṇāṃ ca sarveṣām apatnīnāṃ tathaiva ca

An ancestral rite for a single deceased (ekoddiṣṭa) is prescribed after the sapinḍīkaraṇa rite / for all those without sons, and likewise for those without wives.

After the sapiṇḍīkaraṇa the single-person śrāddha is prescribed for all who had no sons, and likewise for those who had no wives.