Musnad Ahmad #677
Musnad 'Ali Ibn Abi Talib
The Arabic includes the chain of narration (sanad) and the collector's commentary; the English translation shows the Prophet's words only.
حَدَّثَنَا حُسَيْنُ بْنُ مُحَمَّدٍ، حَدَّثَنَا شُعْبَةُ، عَنْ سَلَمَةَ، وَالْمُجَالِدُ، عَنِ الشَّعْبِيِّ، أَنَّهُمَا سَمِعَاهُ يُحَدِّثُ، أَنَّ عَلِيًّا، رَضِيَ اللَّهُ عَنْهُ حِينَ رَجَمَ الْمَرْأَةَ مِنْ أَهْلِ الْكُوفَةِ ضَرَبَهَا يَوْمَ الْخَمِيسِ وَرَجَمَهَا يَوْمَ الْجُمُعَةِ وَقَالَ أَجْلِدُهَا بِكِتَابِ اللَّهِ وَأَرْجُمُهَا بِسُنَّةِ نَبِيِّ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ.
It was narrated from Salimah and Mujalid, from ash-Sha`bi, that they heard him narrate that ‘Ali (رضي الله عنه) said concerning a woman from Koofah who he had flogged on Thursday and stoned on Friday. I flogged her in accordance with the Book of Allah and stoned her in accordance with the Sunnah of the Prophet of Allah (ﷺ).
About Musnad Ahmad
This hadith is #677 from Musnad Ahmad, in the Book of Musnad 'Ali Ibn Abi Talib.