One day an old pious Bedouin came to Medina. At the time of Prayers he began to make wudu’ but he was making his wudu' (ablution) incorrectly. Hassan and Hussain (Allah be pleased with them both) saw the old man making wudu’ wrong and they wanted to correct him. They didn’t want to offend him or make him feel insulted, so they came up with a plan. They went to the old man and said, "My brother and I disagree over who amongst us performs wudu’ the best. Would you mind watching us make wudu’ and be the judge to see which one of us indeed performs wudu' more correctly? Could you please correct us wherever we are wrong?" The man watched carefully trying to judge who is better. In the end he understood what was going on and said "By Allah, I did not know how to perform wudu’ before this. You have both taught me how to do it correctly."