The Prayer of Fear, Pursuit, Encounter, and Competition
Man Lā Yaḥḍuruh al-Faqīh|Volume 1|Book 1|Chapter 63
وَ فِي رِوَايَةِ زُرَارَةَ عَنْ أَبِي جَعْفَرٍ عَلَيْهِ اَلسَّلاَمُ قَالَ: «اَلَّذِي يَخَافُ اَللُّصُوصَ يُصَلِّي إِيمَاءً عَلَى دَابَّتِهِ.
In the narration from Zurarah from Imam Muhammad ibn Ali Al-Baqir عليه السلام who said: "One who fears robbers should perform their prayer by gesturing while on their mount”.
- Ṣaḥīḥ al-Faqīh