عَنْ أَبِي هُرَيْرَةَ ، أَنّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ ، قَالَ : لِكُلِّ نَبِيٍّ دَعْوَةٌ مُسْتَجَابَةٌ يَدْعُو بِهَا ، وَأُرِيدُ أَنْ أَخْتَبِئَ دَعْوَتِي شَفَاعَةً لِأُمَّتِي فِي الْآخِرَةِ (بُخاری شریف: ۶۳۰۴)
Translation
The Messenger of Allah (peace and blessings of Allah be upon him) said: "For every Prophet there is one (accepted) supplication (so every Prophet asked for his accepted supplication in this world) and I want to keep my (accepted) supplication in reserve, for the intercession of my Ummah in the Hereafter." (Tuhfat-ul-Qari)