Sunan an-Nasa'i 3631

Ishaq ibn Ibrahim reported to us: Jarir informed us, from 'Ata' ibn as-Sa'ib, from Abu 'Abd ar-Rahman, from Sa'd ibn Abi Waqqas, who said: The Messenger of Allah (peace and blessings be upon him) visited me during my illness and asked, ‘Have you made a bequest?’ I said, ‘Yes.’ He asked, ‘How much?’ I said, ‘All my wealth, to be spent in the cause of Allah.’ He asked, ‘What have you left for your children?’ I said, ‘They are well provided for.’ He said, ‘Bequeath one-tenth.’ We kept discussing it—he would say something and I would respond—until he said, ‘Bequeath one-third, and one-third is much’—or ‘great.’