وَمِنَ ٱلنَّاسِ مَن يَعْبُدُ ٱللَّهَ عَلَىٰ حَرْفٍ فَإِنْ أَصَابَهُۥ خَيْرٌ ٱطْمَأَنَّ بِهِۦ وَإِنْ أَصَابَتْهُ فِتْنَةٌ ٱنقَلَبَ عَلَىٰ وَجْهِهِۦ خَسِرَ ٱلدُّنْيَا وَٱلْـَٔاخِرَةَ ذَٰلِكَ هُوَ ٱلْخُسْرَانُ ٱلْمُبِينُ
Saheeh International(11) And of the people is he who worships Allāh on an edge.[917] If he is touched by good, he is reassured by it; but if he is struck by trial, he turns on his face [to unbelief]. He has lost [this] world and the Hereafter. That is what is the manifest loss.
English Translation - Rowwad Translation CenterThere are some people who worship Allah on the edge [of faith][6]: if something good comes to them, they are content; but if they are afflicted with a trial, they turn back[7], thus losing both this world and the Hereafter. That is the evident loss.
English Translation - Hilali and Khan11. And among mankind is he who worships Allâh as it were, upon the edge (i.e. in doubt): if good befalls him, he is content therewith; but if a trial befalls him, he turns back on his face (i.e. reverts to disbelief after embracing Islâm). He loses both this world and the Hereafter. That is the evident loss.