It was narrated from Al-Mughirah bin Shu'bah that when the Prophet ﷺ would go away (to relieve himself) he would go far away. He went to relieve himself when he was on one of his journeys, and said:

"Bring me (water for) Wudu'." So I brought him (water for) Wudu', and he performed Wudu' and wiped over his Khuffs.
The Shaikh [1] said: "Isma'il (one of the narrators) is Ibn Ja'far bin Abi Kathir Al-Qari.

[1] Meaning the author, and it appears that Ibn As-Sunni who heard the text, said this.

أَخْبَرَنَا عَلِيُّ بْنُ حُجْرٍ، قَالَ أَنْبَأَنَا إِسْمَاعِيلُ، عَنْ مُحَمَّدِ بْنِ عَمْرٍو، عَنْ أَبِي سَلَمَةَ، عَنِ الْمُغِيرَةِ بْنِ شُعْبَةَ، أَنَّ النَّبِيَّ ﷺ كَانَ إِذَا ذَهَبَ الْمَذْهَبَ أَبْعَدَ قَالَ فَذَهَبَ لِحَاجَتِهِ - وَهُوَ فِي بَعْضِ أَسْفَارِهِ - فَقَالَ " ائْتِنِي بِوَضُوءٍ " . فَأَتَيْتُهُ بِوَضُوءٍ فَتَوَضَّأَ وَمَسَحَ عَلَى الْخُفَّيْنِ . قَالَ الشَّيْخُ إِسْمَاعِيلُ هُوَ ابْنُ جَعْفَرِ بْنِ أَبِي كَثِيرٍ الْقَارِئُ .