It is narrated from Sayyiduna Sa’d bin Abi Waqqas (may Allah be pleased with him) that there were two brothers during the time of the Messenger of Allah (peace and blessings be upon him). One of them died forty days before the other. People praised the one who died first. Then the Messenger of Allah (peace and blessings be upon him) said:“Do you know to what rank the prayers of the other have raised him? The example of prayer is like a river of sweet water, very deep, flowing at someone’s door, and he bathes in it five times a day. Will there remain any dirt on his body? Then do you know to what rank the prayers have raised the other brother?”