The aunt of Umarah ibn Umayr asked Aisha: I have an orphan in my guardianship. May I enjoy from his property? She said: The Messenger of Allah ﷺ said: The pleasantest things a man enjoys come from what he earns, and his child comes from what he earns. (Using translation from Abū Dāʾūd 3528)
أَنَّهَا سَأَلَتْ عَائِشَةَ فِي حِجْرِي يَتِيمٌ فَآكُلُ مِنْ مَالِهِ؟ فَقَالَتْ قَالَ رَسُولُ اللَّهِ ﷺ «إِنَّ مِنْ أَطْيَبِ مَا أَكَلَ الرَّجُلُ مِنْ كَسْبِهِ وَوَلَدُهُ مِنْ كَسْبِهِ» صحيح