حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا وَكِيعٌ، عَنْ دَاوُدَ بْنِ قَيْسٍ، عَنْ عَبْدِ اللَّهِ بْنِ عُبَيْدِ اللَّهِ بْنِ أَقْرَمَ الْخُزَاعِيِّ، عَنْ أَبِيهِ، قَالَ كُنْتُ مَعَ أَبِي بِالْقَاعِ مِنْ نَمِرَةَ فَمَرَّ بِنَا رَكْبٌ فَأَنَاخُوا بِنَاحِيَةِ الطَّرِيقِ فَقَالَ لِي أَبِي كُنْ فِي بَهْمِكَ حَتَّى آتِيَ هَؤُلاَءِ الْقَوْمَ فَأُسَائِلَهُمْ ‏.‏ قَالَ فَخَرَجَ وَجِئْتُ - يَعْنِي دَنَوْتُ - فَإِذَا رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ فَحَضَرْتُ الصَّلاَةَ فَصَلَّيْتُ مَعَهُمْ فَكُنْتُ أَنْظُرُ إِلَى عُفْرَتَىْ إِبْطَىْ رَسُولِ اللَّهِ ـ صلى الله عليه وسلم ـ كُلَّمَا سَجَدَ ‏.‏ قَالَ ابْنُ مَاجَهْ النَّاسُ يَقُولُونَ عُبَيْدُ اللَّهِ بْنُ عَبْدِ اللَّهِ وَقَالَ أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ يَقُولُ النَّاسُ عَبْدُ اللَّهِ بْنُ عُبَيْدِ اللَّهِ ‏.‏ حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ مَهْدِيٍّ، وَصَفْوَانُ بْنُ عِيسَى، وَأَبُو دَاوُدَ قَالُوا حَدَّثَنَا دَاوُدُ بْنُ قَيْسٍ، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ بْنِ أَقْرَمَ، عَنْ أَبِيهِ، عَنِ النَّبِيِّ ـ صلى الله عليه وسلم ـ نَحْوَهُ ‏.‏

It wasnarrated from (`Ubaidullah bin `Abdullah) bin Aqram Al-Khuza`ithat his father said: “I was with my father on the plain inNamirah,*when some riders passed us and made their camels kneel downat theside of the road. My father said to me: ‘Stay with yourlambs until Igo to those people and see what they want.’ He said:Then he (myfather) went out and I came, (i.e., I came near,) thenthere was theMessenger of Allah (PBUH), and the time for prayer cameso I prayedwith them, and I was looking at the whiteness of thearmpits of theMessenger of Allah (PBUH) every time he prostrated.” Ibn Majah said: The people say `Ubaidullah bin `Abdullah, but Abu Bakr bin Abu Shaibah said: "The people say `Abdullah bin `Ubaidullah." Muhammad bin Bashshar said: "`Abdur-Rahman bin Mahdi, Safwan bin `Eisa and Abu Dawud all said: 'Dawud bin Qais narrated to us, from `Ubaidullah bin `Abdullah bin Aqram, from his father, from the Prophet (PBUH).'" With similar wording. Translation Not Available

Book Ref: Sunan Ibn Majah Book 5 Hadith 881
Web Ref:  Sunan Ibn Majah Vol 1 Book 5 Hadith 881