Narrator:Jābir ibn ‘Abdullāh
حَدَّثَنَا مَحْمُودُ بْنُ غَيْلاَنَ، حَدَّثَنَا وَكِيعٌ، وَيَحْيَى بْنُ آدَمَ، قَالاَ حَدَّثَنَا سُفْيَانُ، عَنْ أَبِي الزُّبَيْرِ، عَنْ جَابِرٍ، قَالَ بَعَثَنِي النَّبِيُّ صلى الله عليه وسلم فِي حَاجَةٍ فَجِئْتُ وَهُوَ
يُصَلِّي عَلَى رَاحِلَتِهِ نَحْوَ الْمَشْرِقِ وَالسُّجُودُ أَخْفَضُ مِنَ الرُّكُوعِ
Jabir narrated:
"The Prophet dispatched me for something he needed. I came to him while he was performing Salat on his mount, heading east, he made the prostrations lower than the bowing."
Reported by At-Tirmidhi (No. 351), Abu Dawud (No. 1227) and Ahmad (No. 14028, 14642).