Sahih Muslim 199
Sahih Muslim · Book 1: The Book of Faith · The Prophet (saws) will defer his supplication in order to intercede for his ummah
Abu Huraira reported:
حَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ مُعَاذٍ الْعَنْبَرِيُّ ، حَدَّثَنَا أَبِي ، حَدَّثَنَا شُعْبَةُ ، عَنْ مُحَمَّدٍ، - وَهُوَ ابْنُ زِيَادٍ - قَالَ سَمِعْتُ أَبَا هُرَيْرَةَ ، يَقُولُ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لِكُلِّ نَبِيٍّ دَعْوَةٌ دَعَا بِهَا فِي أُمَّتِهِ فَاسْتُجِيبَ لَهُ وَإِنِّي أُرِيدُ إِنْ شَاءَ اللَّهُ أَنْ أُؤَخِّرَ دَعْوَتِي شَفَاعَةً لأُمَّتِي يَوْمَ الْقِيَامَةِ " .
The Messenger of Allah (ﷺ) said: There was for every apostle a prayer with which he prayed for his Ummah and it was granted to him; but I wish, if Allah so wills, to defer my prayer for the intercession of my Ummah on the Day of Resurrection.