Abu Hurairah (May Allah be pleased with him) reported:
Messenger of Allah (ﷺ) said, "A dinar you spend in Allah's way, or to free a slave, or as a charity you give to a needy person, or to support your family, the one yielding the greatest reward is that which you spend on your family".[Muslim].
Arabic/English book reference: Book 1, Hadith 289