When al-Hajjaj killed Ibn Zubayr, he sent a message to Ibn Umar asking him: At which moment the Messenger of Allah ﷺ used to proceed (to Arafat) this day? He replied: When it happens so, we shall proceed. When Ibn Umar intended to proceed, the people said: The sun did not decline. He (Ibn Umar) asked: Did it decline? They replied: It did not decline. When they said that the sun had declined, he proceeded.  

أَنْ قَتَلَ الْحَجَّاجُ ابْنَ الزُّبَيْرِ أَرْسَلَ إِلَى ابْنِ عُمَرَ أَيَّةُ سَاعَةٍ كَانَ رَسُولُ اللَّهِ ﷺ يَرُوحُ فِي هَذَا الْيَوْمِ قَالَ إِذَا كَانَ ذَلِكَ رُحْنَا فَلَمَّا أَرَادَ ابْنُ عُمَرَ أَنْ يَرُوحَ قَالُوا لَمْ تَزِغِ الشَّمْسُ قَالَ أَزَاغَتْ قَالُوا لَمْ تَزِغْ أَوْ زَاغَتْ قَالَ فَلَمَّا قَالُوا قَدْ زَاغَتِ ارْتَحَلَ