Sunan an-Nasa'i, Book 1, Hadith 322 (In-Book) ⓘ

It was narrated that Shaqiq said: "I was siting with 'Abdullah and Abu Musa, and Abu Musa said: 'Have you not heard what 'Ammar said to 'Umar: 'The Messenger of Allah sent me on an errand and I became Junub, and I could not find water, so I rolled in the earth then I came to the Prophet and told him about.' He said: 'It would have been sufficient for you to do this,' and he struck the earth with his hands, then wiped his hands, then knocked them together to remove the dust, then he wiped his right hand with his left and his left hand with his right, palm to palm, and wiped his face.'" Then 'Abdullah said: "Did you not see that 'Umar was not convinced by what 'Ammar said?"

أَخْبَرَنَا مُحَمَّدُ بْنُ الْعَلاَءِ، قَالَ حَدَّثَنَا أَبُو مُعَاوِيَةَ، قَالَ حَدَّثَنَا الأَعْمَشُ، عَنْ شَقِيقٍ، قَالَ كُنْتُ جَالِسًا مَعَ عَبْدِ اللَّهِ وَأَبِي مُوسَى فَقَالَ أَبُو مُوسَى أَوَلَمْ تَسْمَعْ قَوْلَ عَمَّارٍ لِعُمَرَ بَعَثَنِي رَسُولُ اللَّهِ صلى الله عليه وسلم فِي حَاجَةٍ فَأَجْنَبْتُ فَلَمْ أَجِدِ الْمَاءَ فَتَمَرَّغْتُ بِالصَّعِيدِ ثُمَّ أَتَيْتُ النَّبِيَّ صلى الله عليه وسلم فَذَكَرْتُ ذَلِكَ لَهُ فَقَالَ ‏ "‏ إِنَّمَا كَانَ يَكْفِيكَ أَنْ تَقُولَ هَكَذَا ‏" ‏ ‏.‏ وَضَرَبَ بِيَدَيْهِ عَلَى الأَرْضِ ضَرْبَةً فَمَسَحَ كَفَّيْهِ ثُمَّ نَفَضَهُمَا ثُمَّ ضَرَبَ بِشِمَالِهِ عَلَى يَمِينِهِ وَبِيَمِينِهِ عَلَى شِمَالِهِ عَلَى كَفَّيْهِ وَوَجْهِهِ فَقَالَ عَبْدُ اللَّهِ أَوَلَمْ تَرَ عُمَرَ لَمْ يَقْنَعْ بِقَوْلِ عَمَّارٍ ‏.‏