Man Lā Yaḥḍuruh al-Faqīh
Hadith 12891297 - وَ سَأَلَ عَبْدُ اَلرَّحْمَنِ بْنُ اَلْحَجَّاجِ أَبَا عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ: عَنِ اَلرَّجُلِ يُصَلِّي اَلنَّوَافِلَ فِي اَلْأَمْصَارِ وَ هُوَ عَلَى دَابَّتِهِ حَيْثُمَا تَوَجَّهَتْ بِهِ قَالَ «لاَ بَأْسَ.
Hadith.1297 - Abd al-Rahman ibn al-Hajjaj asked Imam Jafar ibn Muhammad Al-Sadiq (as) about a man performing supererogatory (nafilah) prayers in towns and cities while on his mount, wherever it faces.
He (as) replied: "There is no harm."