The Book of Faith
1/71. Chapter:
The descent of 'Eisa bin Mariam to judge according to the Shari'ah of our Prophet Muhammad (saws); And how Allah has honored this Ummah; And clarifying the evidence that this religion will not be abrogated; and that a group from it will continue to adhere to the truth and prevail until the day of resurrection
Sahih Muslim
حَدَّثَنِي حَرْمَلَةُ بْنُ يَحْيَى، أَخْبَرَنَا ابْنُ وَهْبٍ، أَخْبَرَنِي يُونُسُ، عَنِ ابْنِ شِهَابٍ، قَالَ أَخْبَرَنِي نَافِعٌ، مَوْلَى أَبِي قَتَادَةَ الأَنْصَارِيِّ أَنَّ أَبَا هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " كَيْفَ أَنْتُمْ إِذَا نَزَلَ ابْنُ مَرْيَمَ فِيكُمْ وَإِمَامُكُمْ مِنْكُمْ " .
It is narrated on the authority of Abu Huraira that the Messenger of Allah (ﷺ) observed: What will be your state when the son of Mary descends amongst you and there will be an Imam amongst you?
Reference : Sahih Muslim 155dIn-book reference : Book 1, Hadith 297USC-MSA web (English) reference : Book 1, Hadith 290