It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him) said: "On the Day of Resurrection, three types of people will be on hills of musk: one is the man who is an imam for the people and the people are pleased with him; the second is the man who gives the call to prayer (adhan) five times a day; and the third is the slave who fulfills the rights of Allah and the rights of his master."