عَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ
قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لِكُلِّ نَبِيٍّ دَعْوَةٌ مُسْتَجَابَةٌ فَتَعَجَّلَ كُلُّ نَبِيٍّ دَعْوَتَهُ وَإِنِّي اخْتَبَأْتُ دَعْوَتِي شَفَاعَةً لِأُمَّتِي إِلَى يومِ القِيامةِ فَهِيَ نَائِلَةٌ إِنْ شَاءَ اللَّهُ مَنْ مَاتَ مِنْ أُمَّتِي لَا يُشْرِكُ بِاللَّهِ شَيْئًا»
Abu Hurayrah reported God’s messenger as saying, “Every prophet has a supplication which receives an answer, but whereas every prophet made his supplication in this world, I have kept mine till the day of resurrection to be used in intercession for my people, and if God will, it will reach those of my people who have died without associating anything with God.”
Mishkat al-Masabih 2127, Book 10, Supplications, Hadith 1. 1 min read