Abu Hurairah (RA) reported Allah's Messenger (ﷺ) 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.
Explanation & Benefits
Shaykh Maulana Abdul Aziz Alvi
Hadith Commentary: Benefits and Issues: Spending on one’s family and providing for their sustenance and needs is a personal responsibility of a person and is obligatory (fard). And it is evident that fulfilling an obligation (fard) is a person’s foremost responsibility, and its reward is also the greatest. Because other deeds are not obligatory (fard ‘ayn) at every occasion or at all times, therefore their rank comes afterwards. After fulfilling the obligatory acts, the turn comes for the voluntary (nafl) acts.
Source: Tuhfat al-Muslim: Commentary on Sahih Muslim, Page: 2311