Sahih Muslim 4675
صحيح مسلم#4675Sahihوَحَدَّثَنَا يَحْيَى بْنُ يَحْيَى، وَشَيْبَانُ بْنُ فَرُّوخَ، قَالَ يَحْيَى أَخْبَرَنَا وَقَالَ، شَيْبَانُ حَدَّثَنَا عَبْدُ الْوَارِثِ، عَنْ أَبِي التَّيَّاحِ، حَدَّثَنَا أَنَسُ بْنُ مَالِكٍ، قَالَ كَانُوا يَرْتَجِزُونَ وَرَسُولُ اللَّهِ صلى الله عليه وسلم مَعَهُمْ وَهُمْ يَقُولُونَ اللَّهُمَّ لاَ خَيْرَ إِلاَّ خَيْرُ الآخِرَهْ فَانْصُرِ الأَنْصَارَ وَالْمُهَاجِرَهْ وَفِي حَدِيثِ شَيْبَانَ بَدَلَ فَانْصُرْ فَاغْفِرْ .
According to still another version of the tradition narrated by the same authority, and handed down through a different chain of transmitters, it has been reported that they (the Companions of the Holy Prophet) were reciting rajaz verses and the Messenger of Allah (ﷺ) was (reciting) with them. And they were chanting:O God, there is no good but the good of the Hereafter. So help Thou the Ansar and the Muhajirs. Shaiban substituted" So forgive Thou" for" So help Thou
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:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 32:157