Sahih Muslim
Sahih Muslim 199a
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، وَأَبُو كُرَيْبٍ - وَاللَّفْظُ لأَبِي كُرَيْبٍ - قَالاَ حَدَّثَنَا أَبُو مُعَاوِيَةَ، عَنِ الأَعْمَشِ، عَنْ أَبِي صَالِحٍ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لِكُلِّ نَبِيٍّ دَعْوَةٌ مُسْتَجَابَةٌ فَتَعَجَّلَ كُلُّ نَبِيٍّ دَعْوَتَهُ وَإِنِّي اخْتَبَأْتُ دَعْوَتِي شَفَاعَةً لأُمَّتِي يَوْمَ الْقِيَامَةِ فَهِيَ نَائِلَةٌ إِنْ شَاءَ اللَّهُ مَنْ مَاتَ مِنْ أُمَّتِي لاَ يُشْرِكُ بِاللَّهِ شَيْئًا " .
Abu Bakr ibn Abi Shayba and Abu Kurayb narrated to us; the wording is Abu Kurayb’s. They said: Abu Mu‘awiya narrated to us, from al-A‘mash, from Abu Salih, from Abu Hurayra, who said: The Messenger of Allah (peace and blessings be upon him) said, “Every prophet has a supplication that is answered. Each prophet hastened to make his supplication. I reserved my supplication as an intercession for my community on the Day of Resurrection. If Allah wills, it will reach everyone in my community who dies without associating anything with Allah.”
Translation notes
The source specifies that this is the wording of Abu Kurayb and states the condition attached to the intercession.