Musnad Ahmad 961
It was narrated that ‘Abdur-Rahman bin Abi Laila said:
l saw ‘Ali (رضي الله عنه) in ar-Rahbah, adjuring the people, (saying): I adjure by Allah anyone who heard the Messenger of Allah (ﷺ) say on the day of Ghadeer Khumm:`If I am a person`s mowla (friend and supporter) then ‘Ali is also his mawla”, to stand up and testify. ‘Abdur-Rahman said: And twelve men who had been at Badr stood up. It is as if I can see one of them. And they said: We bear witness that we heard the Messenger of Allah (ﷺ) say on the day of Ghadeer Khumm; `Am I not closer to the believers than their own selves and my wives are their mothers?` We said: Yes indeed, O Messenger of Allah (ﷺ). He said: `If I am a person`s mawla (friend and supporter) then `Ali is also his mawla; O Allah, take as friends those who take him as a friend, and take as enemies those who take him as an enemy.”
حَدَّثَنَا عَبْد اللَّهِ، حَدَّثَنِي عُبَيْدُ اللَّهِ بْنُ عُمَرَ الْقَوَارِيرِيُّ، حَدَّثَنَا يُونُسُ بْنُ أَرْقَمَ، حَدَّثَنَا يَزِيدُ بْنُ أَبِي زِيَادٍ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ أَبِي لَيْلَى، قَالَ شَهِدْتُ عَلِيًّا رَضِيَ اللَّهُ عَنْهُ فِي الرَّحَبَةِ يَنْشُدُ النَّاسَ أَنْشُدُ اللَّهَ مَنْ سَمِعَ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقُولُ يَوْمَ غَدِيرِ خُمٍّ مَنْ كُنْتُ مَوْلَاهُ فَعَلِيٌّ مَوْلَاهُ لَمَّا قَامَ فَشَهِدَ قَالَ عَبْدُ الرَّحْمَنِ فَقَامَ اثْنَا عَشَرَ بَدْرِيًّا كَأَنِّي أَنْظُرُ إِلَى أَحَدِهِمْ فَقَالُوا نَشْهَدُ أَنَّا سَمِعْنَا رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقُولُ يَوْمَ غَدِيرِ خُمٍّ أَلَسْتُ أَوْلَى بِالْمُؤْمِنِينَ مِنْ أَنْفُسِهِمْ وَأَزْوَاجِي أُمَّهَاتُهُمْ فَقُلْنَا بَلَى يَا رَسُولَ اللَّهِ قَالَ فَمَنْ كُنْتُ مَوْلَاهُ فَعَلِيٌّ مَوْلَاهُ اللَّهُمَّ وَالِ مَنْ وَالَاهُ وَعَادِ مَنْ عَادَاهُ‏.‏