Sahih
Muslim
صحيح مسلم
06
The Book of Prayer - Travellers
كتاب صلاة المسافرين وقصرها
Chapter 48: The clarification that the Qur’an was revealed in seven ahruf (modes of recitation), and clarifying its meaning
باب بَيَانِ أَنَّ الْقُرْآنَ عَلَى سَبْعَةِ أَحْرُفٍ وَبَيَانِ مَعْنَاهُ
Sahih Muslim 821 b
This hadith has been narrated by Shu'ba with the same chain of transmitters.
وَحَدَّثَنَاهُ عُبَيْدُ اللَّهِ بْنُ مُعَاذٍ، حَدَّثَنَا أَبِي، حَدَّثَنَا شُعْبَةُ، بِهَذَا الإِسْنَادِ مِثْلَهُ .
Grade: Sahih