Sahih Muslim | Book 5 | Chapter 12

Narrated by Thauban
Thauban reported Allah's Messenger (may peace be upon him) as saying: The most excellent dinar is one that a person spends on his family, and the dinar which he spends on his animal in Allah's path, and the dinar he spends on his companions in Allah's path. Abu Qilaba (one of the narrators) said: He (the narrator) started with family, and then Abu Qilaba said: Who is the person with greater reward than a person who spends on young members of his family (and thus) preserves (saves them from want) (and by virtue of which) Allah brings profit for them and makes them rich.

Narrated by Abu Huraira
Abu Huraira reported Allah's Messenger (may peace be upon him) as saying: Of the dinar you spend as a contribution in Allah's path, or to set free a slave, or as a sadaqa given to a needy, or to support your family, the one yielding the greatest reward is that which you spent on your family.

Narrated by Khaithama
Khaithama reported: While we were sitting in the company of 'Abdullah b. 'Umar there came in his steward. He (Ibn 'Umar) said: Have you supplied the provision to the slaves? He said: No. Upon this he said: Go and give (the provision) to them, for the Messenger of Allah (may peace be upon him) has said: This sin is enough for a man that he withholds the subsistence from one whose master he is.