I was with my father at the plain of Namira when a caravan passed by us and halted at the side of the road. My father said to me, "Stay with your young goats while I go to these people and ask them questions."He set out, and I came along, meaning I drew near, and there was the Messenger of Allah ﷺ. The time for prayer arrived, so I prayed with them, and I would gaze at the whiteness of the underarms of the Messenger of Allah ﷺ every time he prostrated.Ibn Majah said, "People say Ubaydullah bin Abdullah."Abu Bakr bin Abu Shayba said, "People say Abdullah bin Ubaydullah."Muhammad bin Bashshar narrated to us, Abdul-Rahman bin Mahdi, Safwan bin Isa, and Abu Dawud narrated to us, they said, Dawud bin Qays narrated to us from Ubaydullah bin Abdullah bin Aqram from his father from the Prophet ﷺ something similar.
حدثنا أبو بكر بن أبي شيبة حدثنا وكيع عن داود بن قيس
كنت مع أبي بالقاع من نمرة فمر بنا ركب فأناخوا بناحية الطريق فقال لي أبي كن في بهمك حتى آتي هؤلاء القوم فأسائلهم قال فخرج وجئت يعني دنوت فإذا رسول الله ﷺ فحضرت الصلاة فصليت معهم فكنت أنظر إلى عفرتي إبطي رسول الله ﷺ كلما سجد قال ابن ماجة الناس يقولون عبيد الله بن عبد الله و قال أبو بكر بن أبي شيبة يقول الناس عبد الله بن عبيد الله حدثنا محمد بن بشار حدثنا عبد الرحمن بن مهدي وصفوان بن عيسى وأبو داود قالوا حدثنا داود بن قيس عن عبيد الله بن عبد الله بن أقرم عن أبيه عن النبي ﷺ نحوه
[Its chain of transmission is sahih]. Tirmidhi narrated it, in the Book of Prayer, Chapter on What Has Been Said Regarding Raising the Body Away from the Ground During Sujud, hadith no. 274, from the hadith of Dawud, by this route, and he said it is hasan.