Sunan Ibn Majah 3963
سنن ابن ماجه#3963SahihIt was narrated from Anas bin Malik that the Prophet (ﷺ) said:“There are no two Muslims who confront one another with their swords, but both the killer and the slain will be in Hell.”
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Zubair Ali ZaiSahih
In-book reference: 36:38