Abu Huraira reported: A bedouin entered the mosque of the Prophet, peace and blessings be upon him, while the Prophet was sitting. The man prayed and when finished, he said, “O Allah, have mercy upon me and Muhammad and no one else.” The Prophet turned to him and he said, “You have restricted something vast.” It was not long before he was urinating in the mosque, so the people rushed to him, but the Prophet said, “Pour a bucket or a tumbler of water over it. You have only been sent to make things easy, and you were not sent to make things difficult.”
Source: Sunan al-Tirmidhī 147
Grade: Sahih (authentic) according to Al-Tirmidhi
عَنْ أَبِي هُرَيْرَةَ قَالَ دَخَلَ أَعْرَابِيٌّ الْمَسْجِدَ وَالنَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ جَالِسٌ فَصَلَّى فَلَمَّا فَرَغَ قَالَ اللَّهُمَّ ارْحَمْنِي وَمُحَمَّدًا وَلَا تَرْحَمْ مَعَنَا أَحَدًا فَالْتَفَتَ إِلَيْهِ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَ لَقَدْ تَحَجَّرْتَ وَاسِعًا فَلَمْ يَلْبَثْ أَنْ بَالَ فِي الْمَسْجِدِ فَأَسْرَعَ إِلَيْهِ النَّاسُ فَقَالَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَهْرِيقُوا عَلَيْهِ سَجْلًا مِنْ مَاءٍ أَوْ دَلْوًا مِنْ مَاءٍ إِنَّمَا بُعِثْتُمْ مُيَسِّرِينَ وَلَمْ تُبْعَثُوا مُعَسِّرِينَ
147 سنن الترمذي كتاب الطهارة باب ما جاء في البول يصيب الأرض
1/193 المحدث الترمذي خلاصة حكم المحدث حسن صحيح في سنن الترمذي