Muhammad bin al-Minhal al-Darir محمد بن المنهال الضرير · Wages (Kitab Al-Ijarah)

The Prophet (ﷺ) Said: The children of a man come from what he earns, rather they are his pleasantest earning; so enjoy from their property. Abu Dawud said: Hammad b. Abi Sulaiman added in his version: "When you need." But this (addition) is munkar (not authoritative).