One who comes to `Arafat before Fajr on the night of Jam` Sunan Ibn Majah 3016

Arabic hadith text
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، وَعَلِيُّ بْنُ مُحَمَّدٍ، قَالاَ حَدَّثَنَا وَكِيعٌ، حَدَّثَنَا إِسْمَاعِيلُ ابْنُ أَبِي خَالِدٍ، عَنْ عَامِرٍ، - يَعْنِي الشَّعْبِيَّ - عَنْ عُرْوَةَ بْنِ مُضَرِّسٍ الطَّائِيِّ، أَنَّهُ حَجَّ عَلَى عَهْدِ رَسُولِ اللَّهِ ـ صلى الله عليه وسلم ـ فَلَمْ يُدْرِكِ النَّاسَ إِلاَّ وَهُمْ بِجَمْعٍ ‏.‏ قَالَ فَأَتَيْتُ النَّبِيَّ ـ صلى الله عليه وسلم ـ فَقُلْتُ يَا رَسُولَ اللَّهِ إِنِّي أَنْضَيْتُ رَاحِلَتِي وَأَتْعَبْتُ نَفْسِي وَاللَّهِ إِنْ تَرَكْتُ مِنْ حَبْلٍ إِلاَّ وَقَفْتُ عَلَيْهِ فَهَلْ لِي مِنْ حَجٍّ فَقَالَ النَّبِيُّ ـ صلى الله عليه وسلم ـ ‏"‏ مَنْ شَهِدَ مَعَنَا الصَّلاَةَ وَأَفَاضَ مِنْ عَرَفَاتٍ لَيْلاً أَوْ نَهَارًا فَقَدْ قَضَى تَفَثَهُ وَتَمَّ حَجُّهُ ‏"
Translation
It wasnarrated from ‘Urwah bin Mudarris At-Ta’i that he performedHajjduring the time of the Messenger of Allah (ﷺ), and he did notcatchup with the people until they were at Jam’ (Al-Muzdalifah). Hesaid

“I came to the Prophet (ﷺ) and said: ‘O Messenger ofAllah, Ihave made my camel lean (because of the long journey) and Ihave wornmyself out. By Allah, there is no sand hill on which I didnot stand.Have I performed Hajj?’ The Prophet (ﷺ) said: ‘Whoeverattended theprayer (i.e., Fajr at Muzdalifah) with us and departedfrom ‘Arafat,by night or day, may remove the dirt and hascompleted his Hajj.’”