Sunan an-Nasa'i 4748
سنن النسائي#4748Sahihأَخْبَرَنَا الْحُسَيْنُ بْنُ حُرَيْثٍ، قَالَ حَدَّثَنَا إِسْمَاعِيلُ، عَنْ يُونُسَ، عَنِ الْحَكَمِ بْنِ الأَعْرَجِ، عَنِ الأَشْعَثِ بْنِ ثُرْمُلَةَ، عَنْ أَبِي بَكْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " مَنْ قَتَلَ نَفْسًا مُعَاهِدَةً بِغَيْرِ حِلِّهَا حَرَّمَ اللَّهُ عَلَيْهِ الْجَنَّةَ أَنْ يَشُمَّ رِيحَهَا " .
It was narrated that Abu Bakrah said:The Messenger of Allah said: "Whoever kills a Mu'ahad with no justification, Allah will forbid Paradise to him and he will not even smell its fragrance
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 45:43