Sunan Abi Dawud

Narrated Aisha, Ummul Mu'minin: 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)