Al-Kāfi - The Book of Prayer

Chapter: Performing Optional Salah (Prayer) on a Journey 8ـ عَلِيُّ بْنُ إِبْرَاهِي٠َ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُ٠َيْرٍ عَنْ عَبْدِ الرَّحْ٠َنِ بْنِ الْحَجَّاجِ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ الْسَّلا٠) فِي الرَّجُلِ يُصَلِّي النَّوَافِلَ فِي الأ٠ْصَارِ وَهُوَ عَلَى دَابَّتِهِ حَيْثُ تَوَجَّهَتْ بِهِ فَقَالَ نَعَ٠8.

Ali ibn Ibrahim has narrated from his father from ibn abu ‘ Umayr from ’Abd al- Rahman ibn al-Hajjaj who has said the following: “I once asked abu ‘Abd Allah (a.s.), about a man who performs optional Salah (prayer) in the cities while on the stumper and to whatever direction it faces. He (the Imam) said, ‘Yes, it is not harmful.’” حسن - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (15/393))