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."
Sahih al-Bukhari Book 69, Hadith 4
Jabir bin `Abdullah said, "Allah's Messenger (ﷺ) sent troops to the sea coast and appointed Abu 'Ubaida bin
Al-Jarrah as their commander, and they were 300 (men). We set out, and we had covered some
distance on the way, when our journey food ran short. So Abu 'Ubaida ordered that all the food
present with the troops be collected, and it was collected. Our journey food was dates, and Abu
Ubaida kept on giving us our daily ration from it little by little (piecemeal) till it decreased to such an
extent that we did not receive except a date each." I asked (Jabir), "How could one date benefit you?"
He said, "We came to know its value when even that finished." Jabir added, "Then we reached the sea
(coast) where we found a fish like a small mountain. The people (i.e. troops) ate of it for 18 nights (i.e.
days). Then Abu 'Ubaida ordered that two of its ribs be fixed on the ground (in the form of an arch)
and that a she-camel be ridden and passed under them. So it passed under them without touching
them."
Sahih al-Bukhari Book 64, Hadith 386