Sayyiduna Malik bin Huwairith (may Allah be pleased with him) says: We, who were young men of about the same age, came to the Messenger of Allah (peace and blessings be upon him) and stayed for twenty nights. The Messenger of Allah (peace and blessings be upon him) was very kind and soft-hearted. He (peace and blessings be upon him) sensed that we had become eager for our families, so he (peace and blessings be upon him) asked us about those (people) whom we had left behind in our homes. When we told him everything, he (peace and blessings be upon him) said: Go back to your families and stay among them, and teach them (the religion), and instruct them that when the time for prayer comes, one of you should give the call to prayer (adhan), then the eldest among you should lead the prayer.