From Sahih Bukhari (Hadith 220):
Narrated Abu Huraira:A Bedouin stood up and started making water in the mosque. The people caught him but the Prophet (ﷺ) ordered them to leave him and to pour a bucket or a tumbler of water over the place where he had passed the urine. The Prophet (ﷺ) then said, "You have been sent to make things easy and not to make them difficult
Reference: Bukhari 220