Abu Huraira reported Allah’s Messenger (ﷺ) as saying: The supplication of the servant is granted in case he does not supplicate for sin or for severing the ties of blood, or he does not become impatient. It was said: Allah’s Messenger, what does:” If he does not grow impatient” imply? He said: That he should say like this: I supplicated and I supplicated but I did not find it being responded. and then he becomes frustrated and abandons supplication.
حَدَّثَنِي أَبُو الطَّاهِرِ، أَخْبَرَنَا ابْنُ وَهْبٍ، أَخْبَرَنِي مُعَاوِيَةُ، – وَهُوَ ابْنُ صَالِحٍ – عَنْ رَبِيعَةَ بْنِ يَزِيدَ، عَنْ أَبِي إِدْرِيسَ الْخَوْلاَنِيِّ، عَنْ أَبِي هُرَيْرَةَ، عَنِ النَّبِيِّ صلى الله عليه وسلم أَنَّهُ قَالَ ” لاَ يَزَالُ يُسْتَجَابُ لِلْعَبْدِ مَا لَمْ يَدْعُ بِإِثْمٍ أَوْ قَطِيعَةِ رَحِمٍ مَا لَمْ يَسْتَعْجِلْ ” . قِيلَ يَا رَسُولَ اللَّهِ مَا الاِسْتِعْجَالُ قَالَ ” يَقُولُ قَدْ دَعَوْتُ وَقَدْ دَعَوْتُ فَلَمْ أَرَ يَسْتَجِيبُ لِي فَيَسْتَحْسِرُ عِنْدَ ذَلِكَ وَيَدَعُ الدُّعَاءَ ” .
Reference : Sahih Muslim 2735c
In-book reference : Book 48, Hadith 127
USC-MSA web (English) reference : Book 35, Hadith 6595