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Hisn al-Muslim (Fortress of the Muslim) 218
كَانَ النَّبِيُّ صلى الله عليه وسلم إِذَا أَتَاهُ الْأَمْرُ يَسُرُّهُ قَالَ: ((الْحَمْدُ لِلَّهِ الَّذِي بِنِعْمَتِهِ تَتِمُّ الصَّالِحَاتُ)) وَإِذَا أَتَاهُ الْأَمْرُ يَكْرَهُهُ قَالَ: ((الْحَمْدُ لِلَّهِ عَلَى كُلِّ حَالٍ)).
When something happened that pleased him, the Prophet used to say:((Alhamdu lillaahil-lathee bini'matihi tatimmuus-saalihaat)). Praise is to Allah Who by His blessings all good things are perfected. And if something happened that displeased him, he used to say:((Alhamdulillaahi 'alaa kulli haal)).Praise is to Allah in all circumstances.
Cited in Hisn al-Muslim (Fortress of the Muslim) (No. 218).