عَنْ أَبِي ذَرٍّ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «إِنَّ الصَّعِيدَ الطَّيِّبَ وَضُوءُ الْمُسلم وَإِن لم يجد لاماء عشر سِنِين فغذا وجد المَاء فليمسه بشره فَإِنَّ ذَلِكَ خَيْرٌ» . رَوَاهُ أَحْمَدُ وَالتِّرْمِذِيُّ وَأَبُو دَاوُدَ وَرَوَى النَّسَائِيُّ نَحْوَهُ إِلَى قَوْلِهِ: عَشْرَ سِنِين

Abu Dharr reported God’s messenger as saying, "Good earth is a means of ablution for a Muslim, even if he does not find water for ten years; but when he finds water he should make it touch his skin, for that is better.” Ahmad, Tirmidhi and Abu Dawud transmitted it, and Nasa’i has something similar up to "ten years”.