Sayyiduna Jabir (may Allah be pleased with him) narrates: I saw the Prophet (peace and blessings of Allah be upon him) performing prayer on his mount. He was offering voluntary prayers, regardless of which direction he was facing. However, while prostrating, he would bend lower than he did in bowing. He was performing bowing and prostration by gestures.
Hadith Referenceصحیح ابن حبان / كتاب الصلاة / 2523
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - «التعليق على صحيح ابن خزيمة» (1270).فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح، رجاله ثقات رجال الصحيح، وقد صرح أبو الزبير بالسماع من جابر.