كتاب البيوع
11  
Business Transactions
(1c)
Chapter: Earning, and Seeking what is Lawful - Section 3
(1)
باب الكسب وطلب الحلال - الفصل الثالث
Mishkat al-Masabih 2783
Rafi' b. Khadij said God's Messenger was asked what type of earning was best and replied, “A man’s work with his hand and every business transaction which is approved.” Ahmad transmitted it.
وَعَنْ رَافِعِ بْنِ خَدِيجٍ قَالَ: قِيلَ: يَا رَسُولَ اللَّهِ أَيُّ الْكَسْبِ أَطْيَبُ؟ قَالَ: «عَمَلُ الرَّجُلِ بِيَدِهِ وَكُلُّ بَيْعٍ مَبْرُورٍ» . رَوَاهُ أَحْمَدُ
  لم تتمّ دراسته   (الألباني) حكم   :
Reference : Mishkat al-Masabih 2783
In-book reference : Book 11, Hadith 25