Rasulullah (sallallahu ‘alaihi wasallam) then made the following du‘aa for Hazrat Sa’d (radhiyallahu ‘anhu) thrice, “O Allah! Cure Hazrat Sa’d (radhiyallahu ‘anhu)!”

Hazrat Sa’d (radhiyallahu ‘anhu) thereafter asked Rasulullah (sallallahu ‘alaihi wasallam), “O Rasul of Allah (sallallahu ‘alaihi wasallam)! I have abundant wealth, and only my daughter will inherit from me. Can I make a wasiyyat (bequest) for all my wealth (to be given in charity after my demise)?” Rasulullah (sallallahu ‘alaihi wasallam) replied, “No.”

Hazrat Sa’d (radhiyallahu ‘anhu) then asked, “Can I bequest for two-thirds of my wealth (to be given in charity after my demise)?” Rasulullah (sallallahu ‘alaihi wasallam) replied, “No.”

Hazrat Sa’d (radhiyallahu ‘anhu) then asked if he could bequest for half of his wealth to be given in charity after his demise, to which Rasulullah (sallallahu ‘alaihi wasallam) replied in the negative.

Finally, Hazrat Sa’d (radhiyallahu ‘anhu) asked Rasulullah (sallallahu ‘alaihi wasallam) if he could bequest for one-third of his wealth to be given in charity after his demise. Rasulullah (sallallahu ‘alaihi wasallam) replied, “(You may bequest) one-third, and even one-third is a large amount. Indeed all the charity that you give from your wealth is charity, whatever you spend on your dependants is charity, whatever your wife uses from your wealth is charity, and for you to leave your family in comfort and prosperity is better than for you to leave them stretching their hands before people (begging due to poverty).”

(Saheeh Muslim #1628)