hadith
4128
۞
The Prophet (SAWA) said, 'Do not preoccupy yourself away from the duties incumbent upon you in your bid to secure that which is guaranteed to you, for indeed neither will you miss out on that which has been apportioned for you, nor will you attain that which has been placed beyond your reach.
رسولُ اللهِ (صَلَّيَ اللهُ عَلَيهِ وَ آلِهِ): لا تَتَشاغَلْ عمّا فُرِضَ علَيكَ بِما قد ضُمِنَ لَكَ فإنّهُ لَيسَ بفائتِكَ ما قد قُسِّمَ لَكَ ، ولَستَ بِلاحِقٍ ما قد زُوِيَ عنكَ.