كتاب الزهد والرقائق
55
The Book of Zuhd and Softening of Hearts
(13)
Chapter: The Believer's Affair Is All Good
(13)
باب الْمُؤْمِنُ أَمْرُهُ كُلُّهُ خَيْرٌ

Suhaib reported that Allah's Messenger (ﷺ) said:

Strange are the ways of a believer for there is good in every affair of his and this is not the case with anyone else except in the case of a believer for if he has an occasion to feel delight, he thanks (God), thus there is a good for him in it, and if he gets into trouble and shows resignation (and endures it patiently), there is a good for him in it.
حَدَّثَنَا هَدَّابُ بْنُ خَالِدٍ الأَزْدِيُّ، وَشَيْبَانُ بْنُ فَرُّوخَ، جَمِيعًا عَنْ سُلَيْمَانَ بْنِ الْمُغِيرَةِ، - وَاللَّفْظُ لِشَيْبَانَ - حَدَّثَنَا سُلَيْمَانُ، حَدَّثَنَا ثَابِتٌ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ أَبِي لَيْلَى، عَنْ صُهَيْبٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏ "‏ عَجَبًا لأَمْرِ الْمُؤْمِنِ إِنَّ أَمْرَهُ كُلَّهُ خَيْرٌ وَلَيْسَ ذَاكَ لأَحَدٍ إِلاَّ لِلْمُؤْمِنِ إِنْ أَصَابَتْهُ سَرَّاءُ شَكَرَ فَكَانَ خَيْرًا لَهُ وَإِنْ أَصَابَتْهُ ضَرَّاءُ صَبَرَ فَكَانَ خَيْرًا لَهُ ‏"‏ ‏.‏
Reference : Sahih Muslim 2999
In-book reference : Book 55, Hadith 82
USC-MSA web (English) reference : Book 42, Hadith 7138
  (deprecated numbering scheme)