صحيح مسلم
Sahih Muslim
كتاب صلاة المسافرين وقصرها
The Book of Prayer - Travellers
باب جَوَازِ صَلاَةِ النَّافِلَةِ عَلَى الدَّابَّةِ فِي السَّفَرِ حَيْثُ تَوَجَّهَتْ:
Chapter: It is permissible to offer voluntary prayers atop one’s mount when travelling, no matter what direction it is facing
Hadith 700
This hadith is listed as number 1610 in Maktaba Shamila
حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ نُمَيْرٍ ، حَدَّثَنَا أَبِي ، حَدَّثَنَا عُبَيْدُ اللَّهِ ، عَنْ نَافِعٍ ، عَنِ ابْنِ عُمَرَ ، أَنّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ ، " كَانَ يُصَلِّي سُبْحَتَهُ ، حَيْثُمَا تَوَجَّهَتْ بِهِ نَاقَتُهُ " .
A hadith like this that Ibn 'Abbas ordered his Mu'adhdhin (to summon people to prayer and then make announcement to say prayer in their houses) on Friday which was a rainy day, has been transmitted by 'Abdullah bin Harith. Wuhaib, however, says that he did not hear it from him.
