Musnad Ahmad

It is narrated from Sayyiduna Sa’d bin Abi Waqqas (may Allah be pleased with him) that once I submitted: O Messenger of Allah! Can I bequeath all my wealth in the way of Allah? He said: “No.” He asked about bequeathing two-thirds of his wealth, and the Prophet (peace and blessings be upon him) again forbade it. He asked about half, and he was still forbidden. Then when he asked about one-third of his wealth, the Prophet (peace and blessings be upon him) said: “Yes! You can bequeath one-third, and even one-third is a lot. Remember! If you leave your family in a good state, it is much better than leaving them in such a condition that they are forced to stretch their hands before people.”