[Machine] Amr ibn Yasir recalls when we were on a military expedition and became ritually impure, so we rolled in the dirt. Then we went to the Prophet ﷺ and informed him about it. He said, "It is sufficient for you to do this," and he described that, meaning performing dry ablution (tayammum).
لَهُ عَمَّارُ بْنُ يَاسِرٍ تَذْكُرُ إِذْ كُنَّا فِي سَرِيَّةٍ وَأَجْنَبْنَا فَتَمَرَّغْنَا فِي التُّرَابِ فَأَتَيْنَا النَّبِيَّ ﷺ فَذَكَرْنَا ذَلِكَ لَهُ فَقَالَ إِنَّمَا كَانَ يَكْفِيكَ هَكَذَا وَوَصَفَ ذَلِكَ يَعْنِي التَّيَمُّمَ