Sunan al-Nasa'i
The Book of Hajj — Hadith #3022
أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ أَنْبَأَنَا وَكِيعٌ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ بُكَيْرِ بْنِ عَطَاءٍ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ يَعْمَرَ، قَالَ شَهِدْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم فَأَتَاهُ نَاسٌ فَسَأَلُوهُ عَنِ الْحَجِّ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم
" الْحَجُّ عَرَفَةُ فَمَنْ أَدْرَكَ لَيْلَةَ عَرَفَةَ قَبْلَ طُلُوعِ الْفَجْرِ مِنْ لَيْلَةِ جَمْعٍ فَقَدْ تَمَّ حَجُّهُ " .
“I saw the Messenger of Allah when people came to him and asked him about Hajj. The Messenger of Allah said: ‘Hajj is Arafat. Whoever catches up with the night of Arafat before dawn comes on the night of Jam (Al-Muzdalifah), his Hajj is complete.'”
Chain of Narration (Isnad)