وَمِنَ النَّاسِ مَن يَعْبُدُ اللَّهَ عَلَى حَرْفٍ فَإِنْ أَصَابَهُ خَيْرٌ اطْمَأَنَّ بِهِ وَإِنْ أَصَابَتْهُ فِتْنَةٌ انقَلَبَ عَلَى وَجْهِهِ خَسِرَ الدُّنْيَا وَالْآخِرَةَ ذَلِكَ هُوَ الْخُسْرَانُ الْمُبِينُ
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سورة الحج
(22/11) And of mankind is he who worshippeth Allah as on edge; if there befalleth him good, he in contented therewith, and if there befalleth him a trial, he turneth round on his face; he loseth the world and the Hereafter: that indeed is a loss manifest!
Surah Al-Hajj