Abu Huraira reported: The Messenger of Allah, peace and blessings be upon him, said, “The servant will continue to have his supplications answered as long as he does not ask for sin or cutting family ties, and he is not impatient.” They said, “O Messenger of Allah, what is its impatience?” The Prophet said, “He says: I have supplicated again and again, but I have not seen an answer. He becomes frustrated with that and gives up supplicating.”
Source: Ṣaḥīḥ Muslim 2735
Grade: Sahih (authentic) according to Muslim
عَنْ أَبِي هُرَيْرَةَ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ لَا يَزَالُ يُسْتَجَابُ لِلْعَبْدِ مَا لَمْ يَدْعُ بِإِثْمٍ أَوْ قَطِيعَةِ رَحِمٍ مَا لَمْ يَسْتَعْجِلْ قِيلَ يَا رَسُولَ اللَّهِ مَا الِاسْتِعْجَالُ قَالَ يَقُولُ قَدْ دَعَوْتُ وَقَدْ دَعَوْتُ فَلَمْ أَرَ يَسْتَجِيبُ لِي فَيَسْتَحْسِرُ عِنْدَ ذَلِكَ وَيَدَعُ الدُّعَاءَ
2735 صحيح مسلم كتاب الذكر والدعاء والتوبة والاستغفار باب بيان أنه يستجاب للداعي ما لم يعجل فيقول دعوت فلم يستجب لي