Jami at-Tirmidhi 29474
In-book no 3694حَدَّثَنَا يَحْيَى بْنُ مُوسَى، أَخْبَرَنَا عَمْرُو بْنُ عَوْنٍ، أَخْبَرَنَا أَبُو عَوَانَةَ، عَنْ عُمَرَ بْنِ أَبِي سَلَمَةَ، عَنْ أَبِيهِ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لِيَنْظُرَنَّ أَحَدُكُمْ مَا الَّذِي يَتَمَنَّى فَإِنَّهُ لاَ يَدْرِي مَا يُكْتَبُ لَهُ مِنْ أُمْنِيَّتِهِ " . هَذَا حَدِيثٌ حَسَنٌ .
Umar bin Abi Salamah narrated from his father, who said: “The Messenger of Allah (ﷺ) said: ‘Let one of you look at what it is that he wishes for. For verily, he does not know what of his wish shall be recorded.’”