Sahih al-Bukhari Book 69, Hadith 5
"The Prophet (ﷺ) said, 'The best alms is that which is given when one is rich, and a giving hand is better
than a taking one, and you should start first to support your dependents.' A wife says, 'You should
either provide me with food or divorce me.' A slave says, 'Give me food and enjoy my service." A son
says, "Give me food; to whom do you leave me?" The people said, "O Abu Huraira! Did you hear that
from Allah's Messenger (ﷺ) ?" He said, "No, it is from my own self."
The Prophet (ﷺ) visited me at Mecca while I was ill. I said (to him), "I have property; May I bequeath all my property in Allah's Cause?" He said, "No." I said, "Half of it?" He said, "No." I said, "One third of it?" He said, "One-third (is alright), yet it is still too much, for you'd better leave your inheritors wealthy than leave them poor, begging of others. Whatever you spend will be considered a Sadaqa for you, even the mouthful of food you put in the mouth of your wife. Anyhow Allah may let you recover, so that some people may benefit by you and others be harmed by you."
Allah's Messenger (ﷺ) said, "The best alms is that which you give when you are rich, and you should start first to support your dependants."