حَدَّثَنَا عَلِيُّ بْنُ عَاصِمٍ أَنْبَأَنَا يَزِيدُ بْنُ أَبِي زِيَادٍ عَنْ عَاصِمِ بْنِ عُبَيْدِ اللَّهِ عَنْ أَبِيهِ أَوْ جَدِّهِ الشَّكُّ مِنْ يَزِيدَ عَنْ عُمَرَ رَضِيَ اللَّهُ عَنْهُ قَالَ رَأَيْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ تَوَضَّأَ بَعْدَ الْحَدَثِ وَمَسَحَ عَلَى خُفَّيْهِ وَصَلَّى
مسند امام احمد بن حنبل · Hadith 343
It was narrated that 'Umar (RA) said: I saw the Messenger of Allah (PBUH) doing wudoo' after relieving himself, and wiping over his leather slippers (khu ff), then praying.
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020