Sunan Ibn Majah 1835

It was narrated that:Umm Salamah said: “The Messenger of Allah enjoined charity upon us. Zainab, the wife of Abdullah said: 'Will it be accepted as charity on my part if I give charity to my husband who is poor, and to the children of a brother of mine who are orphans, spending such and such on them, and in all circumstances?' He said: 'Yes.'”