Manavashrautasutra 11.8.10.9

11.8.10.9

atha yady eṣām̐ svāsu bhāryāsv apatyaṃ na syād riktham̐ hareyuḥ piṇḍaṃ caibhyas tripuruṣaṃ dadyur yadi syād ubhābhyām eva dadyur ity ācāryavacanam /

Now, if there should be no offspring born to them of their own wives, they should take the inheritance and give them ancestral balls for three generations; if there should be [offspring], they should give [ancestral balls] to both—such is the statement of the teachers.