Sahih Muslim 4826
صحيح مسلم#4826Sahihحَدَّثَنَا مُحَمَّدُ بْنُ الصَّبَّاحِ أَبُو جَعْفَرٍ، حَدَّثَنَا إِسْمَاعِيلُ بْنُ زَكَرِيَّاءَ، عَنْ عَاصِمٍ الأَحْوَلِ، عَنْ أَبِي عُثْمَانَ النَّهْدِيِّ، حَدَّثَنِي مُجَاشِعُ بْنُ مَسْعُودٍ السُّلَمِيُّ، قَالَ أَتَيْتُ النَّبِيَّ صلى الله عليه وسلم أُبَايِعُهُ عَلَى الْهِجْرَةِ فَقَالَ " إِنَّ الْهِجْرَةَ قَدْ مَضَتْ لأَهْلِهَا وَلَكِنْ عَلَى الإِسْلاَمِ وَالْجِهَادِ وَالْخَيْرِ " .
It has been reported on the authority of Mujashi' b. Mas'ud as-Sulami who said:I came to the Prophet (ﷺ) to offer him my pledge of migration. He said: The period of migration has expired (and those who wereto get the reward for this great act of devotion have got it). You may now give your pledge to serve the cause of Islam, to strive in the way of Allah and to follow the path of virtue
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: 33:122