Islam is a religion of ease, and it made easier for the Muslims many of the rulings that had been imposed on previous nations. One example of that is how it made the matter of purification and removing impurities, if they contaminate someone, easy. In this hadith, the Tabi‘i Abu Wa’il Shaqiq ibn Salamah narrates that Abu Musa al-Ash‘ari (may Allah be pleased with him) was very strict in taking precautions regarding urine, to the extent that it was said that he would urinate in a bottle, for fear of any of it contaminating him. He said that among the Children of Israel, if urine contaminated the garment of one of them, he would cut it off, meaning that he would cut off the part of his garment that had become contaminated with urine. Hudhayfah ibn al-Yaman (may Allah be pleased with him) said: I wish Abu Musa al-Ash‘ari would stop being so strict regarding this matter, because it is contrary to the Sunnah. The Messenger of Allah (blessings and peace of Allah be upon him) came to the garbage dump of some people, and urinated standing, and undoubtedly when one stands, there is bound to be some splashback, but he did not go to the trouble of urinating in a bottle and the like. This is by way of not causing too much hardship for people, because in principle whatever impurity (najasah) contaminates a person’s clothes or body may be purified with water, so if the Muslim pays attention to what he thinks was most likely contaminated with urine and the like, he should pour water over it where it can be seen, then it becomes pure. It was said that the Prophet (blessings and peace of Allah be upon him) urinated standing in that place because it was not possible to sit in that garbage dump, or because the impurity that would contaminate him if he sat would be greater than if he stood. This hadith indicates that it is allowed to urinate standing if you are certain that you will not be contaminated with urine..