хӯрондан

Хоҳари ман модарамро мехӯронад.
My sister feeds my mother.
Модар худаш намехӯраду фарзандашро мехӯронад.
The mother herself doesn’t eat but she feeds her children.

Bonus:
Some Tajik verbs can be made into causative verbs by inserting он in the verb.
хӯрдан: to eat
хӯрондан: to feed (someone else)

More examples –
фаҳмидан: to understand
фаҳмондан: to explain (to make someone understand)
кӯчидан: to move
кӯчондан: to make someone move, to evict
пӯшидан: to put on (an item of clothing)
пӯшондан: to dress (someone else)
тарсидан: to be scared
тарсондан: to scare (someone else)