'Abdullah b. 'Amir b. Rabi'a has reported on the authority of his father that he had seen the Messenger of Allah ﷺ observing Nafl player at night on a journey on the back of his ride in whichever direction it turned its face.
أَخْبَرَهُ أَنَّهُ رَأَى رَسُولَ اللَّهِ ﷺ يُصَلِّي السُّبْحَةَ بِاللَّيْلِ فِي السَّفَرِ عَلَى ظَهْرِ رَاحِلَتِهِ حَيْثُ تَوَجَّهَتْ