Messenger of Allah ﷺ proceeded from ʿArafat till when he reached the mountain pass, he dismounted, urinated and then performed ablution but not a perfect one. I said to him, ("Is it the time for) the prayer, O Messenger of Allah ﷺ?" He said, "The (place of) prayer is ahead of you." He rode till when he reached Al-Muzdalifa, he dismounted and performed ablution and a perfect one, The (call for) Iqama was pronounced and he led the Maghrib prayer. Then everybody made his camel kneel down at its place. Then the Iqama was pronounced for the ʿIsha' prayer which the Prophet ﷺ led and no prayer was offered in between the two . prayers (ʿIsha' and Maghrib).  

أَنَّهُ سَمِعَهُ يَقُولُ دَفَعَ رَسُولُ اللَّهِ ﷺ مِنْ عَرَفَةَ حَتَّى إِذَا كَانَ بِالشِّعْبِ نَزَلَ فَبَالَ ثُمَّ تَوَضَّأَ وَلَمْ يُسْبِغِ الْوُضُوءَ فَقُلْتُ الصَّلاَةَ يَا رَسُولَ اللَّهِ فَقَالَ الصَّلاَةُ أَمَامَكَ فَرَكِبَ فَلَمَّا جَاءَ الْمُزْدَلِفَةَ نَزَلَ فَتَوَضَّأَ فَأَسْبَغَ الْوُضُوءَ ثُمَّ أُقِيمَتِ الصَّلاَةُ فَصَلَّى الْمَغْرِبَ ثُمَّ أَنَاخَ كُلُّ إِنْسَانٍ بَعِيرَهُ فِي مَنْزِلِهِ ثُمَّ أُقِيمَتِ الْعِشَاءُ فَصَلَّى وَلَمْ يُصَلِّ بَيْنَهُمَا  

Usama was asked in my presence, "How was the speed of (the camel of) Messenger of Allah ﷺ while departing from ʿArafat during the Hajjatul Wadaʿ?" Usama replied, "The Prophet ﷺ proceeded on with a modest pace, and when there was enough space he would (make his camel) go very fast."  

سُئِلَ أُسَامَةُ وَأَنَا جَالِسٌ كَيْفَ كَانَ رَسُولُ اللَّهِ ﷺ يَسِيرُ فِي حَجَّةِ الْوَدَاعِ حِينَ دَفَعَ قَالَ كَانَ يَسِيرُ الْعَنَقَ فَإِذَا وَجَدَ فَجْوَةً نَصَّ قَالَ هِشَامٌ وَالنَّصُّ فَوْقَ الْعَنَقِ  

Messenger of Allah ﷺ offered the Maghrib and ʿIsha' prayers together at Al-Muzdalifa.  

أَنَّ رَسُولَ اللَّهِ ﷺ جَمَعَ فِي حَجَّةِ الْوَدَاعِ الْمَغْرِبَ وَالْعِشَاءَ بِالْمُزْدَلِفَةِ  

The Prophet ﷺ used to offer the Maghrib and ʿIsha' prayers together whenever he was in a hurry on a journey.  

كَانَ النَّبِيُّ ﷺ يَجْمَعُ بَيْنَ الْمَغْرِبِ وَالْعِشَاءِ إِذَا جَدَّ بِهِ السَّيْرُ