كتاب البيوع
11  
Business Transactions
(1b)
Chapter: Earning, and Seeking what is Lawful - Section 2
(1)
باب الكسب وطلب الحلال
Mishkat al-Masabih 2770
‘A'isha reported the Prophet as saying, “The pleasantest things you enjoy come from what you earn, and your children come from what you earn”*. The version of Aba Dawud and Darimi has, “The pleasantest things a man enjoys come from what he earns and his child comes from what he earns.” Tirmidhi, Nasa’i and Ibn Majah transmitted it. *Or “are a part of your earnings.” The phrase expresses two ideas:
the children are the result of marriage, and parents who are in need may receive support from their children.
عَنْ عَائِشَةَ قَالَتْ: قَالَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «إِنَّ أَطْيَبَ مَا أَكَلْتُمْ مِنْ كَسْبِكُمْ وَإِنَّ أَوْلَادَكُمْ مِنْ كَسْبِكُمْ» . رَوَاهُ التِّرْمِذِيُّ وَالنَّسَائِيُّ وَابْنُ مَاجَهْ. وَفِي رِوَايَةِ أَبِي دَاوُدَ وَالدَّارِمِيِّ: «إِنَّ أَطْيَبَ مَا أَكَلَ الرَّجُلُ مِنْ كَسْبِهِ وَإِنَّ وَلَده من كَسبه»
  صَحِيح   (الألباني) حكم   :
Reference : Mishkat al-Masabih 2770
In-book reference : Book 11, Hadith 12