The Law Code of Bṛhaspati 1.26.98

1.26.98

pitṛvyagurudauhitrān svasṛbhartrīyam ātulān /
pūjayet kavyapūrtābhyāṃ vṛddhān āthātithīn striyaḥ //

Let her propitiate with funeral oblations and pious liberality her husband's paternal uncles, Gurus, daughter's sons, sister's sons, and maternal uncles; also aged or helpless persons, guests, and women (belonging to the family).