ʿAbdul-Malik bin Marwan wrote to Al-Hajjaj that he should follow ʿAbdullah bin ʿUmar in all the ceremonies of Hajj. So when it was the Day of ʿArafat (9th of Dhul-Hijja), and after the sun has deviated or has declined from the middle of the sky, I and Ibn ʿUmar came and he shouted near the cotton (cloth) tent of Al-Hajjaj, "Where is he?" Al-Hajjaj came out. Ibn ʿUmar said, "Let us proceed (to ʿArafat)." Al-Hajjaj asked, "Just now?" Ibn ʿUmar replied, "Yes." Al-Hajjaj said, "Wait for me till I pour water on me (i.e. take a bath)." So, Ibn ʿUmar dismounted (and waited) till Al-Hajjaj came out. He was walking between me and my father. I informed Al-Hajjaj, "If you want to follow the Sunna today, then you should shorten the sermon and then hurry up for the stay (at ʿArafat)." Ibn ʿUmar said, "He (Salim) has spoken the truth."  

أَنْ تُصِيبَ السُّنَّةَ الْيَوْمَ فَاقْصُرِ الْخُطْبَةَ وَعَجِّلِ الْوُقُوفَ فَقَالَ ابْنُ عُمَرَ صَدَقَ