Narrated by Abu Hurayrah: Allah’s Apostle said,

“The strong believer is better and more beloved to Allah than the weak believer, while there is good in both. Guard over that which benefits you, seek Allah’s Assistance, and don’t lend yourself to things devoid of benefit, and if something befalls you, then don’t say ‘If I only would have done such and such,’ rather say ‘Allâh ordained this and He does what He wills’ [Qaddarallaahu wa maa shaa’ fa’al] for verily the phrase ‘If I would have’ makes way for the work of the Devil.”