Patience
عَجَبًا لِأَمْرِ الْمُؤْمِنِ، إِنَّ أَمْرَهُ كُلَّهُ خَيْرٌ، وَلَيْسَ ذَاكَ لِأَحَدٍ إِلَّا لِلْمُؤْمِنِ، إِنْ أَصَابَتْهُ سَرَّاءُ شَكَرَ، فَكَانَ خَيْرًا لَهُ، وَإِنْ أَصَابَتْهُ ضَرَّاءُ صَبَرَ فَكَانَ خَيْرًا لَهُ
Translation
How wonderful is the affair of the believer, for all of his affairs are good. If something good happens to him, he is grateful and that is good for him. And if something bad happens to him, he is patient and that is good for him.
Narrator
Suhayb ibn Sinan
Source
Sahih Muslim
Muslim 2999