Al-Mughira bin Shuʿba, said, "The Prophet ﷺ went out to answer the call of nature and (when he had finished) I got up to pour water for him." I think that he said that the event had taken place during the Ghazwa of Tabuk. Al-Mughira added. "The Prophet ﷺ washed his face, and when he wanted to wash his forearms, the sleeves of his cloak became tight over them, so he took them out from underneath the cloak and then he washed them (i.e. his forearms) and passed wet hands over his Khuffs (socks made from thick fabric or leather)."  

ذَهَبَ النَّبِيُّ ﷺ لِبَعْضِ حَاجَتِهِ فَقُمْتُ أَسْكُبُ عَلَيْهِ الْمَاءَ لاَ أَعْلَمُهُ إِلاَّ قَالَ فِي غَزْوَةِ تَبُوكَ فَغَسَلَ وَجْهَهُ وَذَهَبَ يَغْسِلُ ذِرَاعَيْهِ فَضَاقَ عَلَيْهِ كُمُّ الْجُبَّةِ فَأَخْرَجَهُمَا مِنْ تَحْتِ جُبَّتِهِ فَغَسَلَهُمَا ثُمَّ مَسَحَ عَلَى خُفَّيْهِ  

We returned in the company of the Prophet ﷺ from the Ghazwa of Tabuk, and when we looked upon Medina, the Prophet ﷺ said, "This is Taba (i.e. Medina), and this is Uhud, a mountain that loves us and is loved by us."  

أَقْبَلْنَا مَعَ النَّبِيِّ ﷺ مِنْ غَزْوَةِ تَبُوكَ حَتَّى إِذَا أَشْرَفْنَا عَلَى الْمَدِينَةِ قَالَ هَذِهِ طَابَةُ وَهَذَا أُحُدٌ جَبَلٌ يُحِبُّنَا وَنُحِبُّهُ  

Messenger of Allah ﷺ returned from the Ghazwa of Tabuk, and when he approached Medina, he said, "There are some people in Medina who were with you all the time, you did not travel any portion of the journey nor crossed any valley, but they were with you they (i.e. the people) said, "O Messenger of Allah ﷺ! Even though they were at Medina?" He said, "Yes, because they were stopped by a genuine excuse."  

أَنَّ رَسُولَ اللَّهِ ﷺ رَجَعَ مِنْ غَزْوَةِ تَبُوكَ فَدَنَا مِنَ الْمَدِينَةِ فَقَالَ إِنَّ بِالْمَدِينَةِ أَقْوَامًا مَا سِرْتُمْ مَسِيرًا وَلاَ قَطَعْتُمْ وَادِيًا إِلاَّ كَانُوا مَعَكُمْ قَالُوا يَا رَسُولَ اللَّهِ وَهُمْ بِالْمَدِينَةِ قَالَ وَهُمْ بِالْمَدِينَةِ حَبَسَهُمُ الْعُذْرُ