Sunan an-Nasai 15512
In-book no 776أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ الأَعْلَى، قَالَ حَدَّثَنَا خَالِدٌ، قَالَ حَدَّثَنَا شُعْبَةُ، عَنْ سُلَيْمَانَ، عَنْ إِبْرَاهِيمَ، عَنْ هَمَّامٍ، قَالَ رَأَيْتُ جَرِيرًا بَالَ ثُمَّ دَعَا بِمَاءٍ فَتَوَضَّأَ وَمَسَحَ عَلَى خُفَّيْهِ ثُمَّ قَامَ فَصَلَّى فَسُئِلَ عَنْ ذَلِكَ فَقَالَ رَأَيْتُ النَّبِيَّ صلى الله عليه وسلم صَنَعَ مِثْلَ هَذَا .
It was narrated that Hammam said: "I saw Jarir urinate, then he called for water and performed wudhu, and wiped over his Khuffs, then he stood up and prayed. He was asked about that and he said: 'I saw the Prophet(ﷺ) do exactly like this.'"