وَمَنْ كَانَ خَارِجَ الْمِصْرِ يَتَنَفَّلُ عَلَى دَابَّتِهِ إِلَى أَيِّ جِهَةٍ تَوَجَّهَتْ، يُومِئُ إِيمَاءً.
Translation: Someone outside the town may perform nafl prayer on a mount in whatever direction it travels, bowing and prostrating by gestures.
“Outside the town” means beyond settled city limits. This concession applies to voluntary prayer rather than removing the usual conditions of standing and qiblah for obligatory prayer.
Ima’ consists of gesturing for ruku and sujud, with the sujud gesture lower than the ruku gesture.