Sayyiduna Tamim Dari (may Allah be pleased with him) said: During the time of Sayyiduna Umar (may Allah be pleased with him), people began to take pride in building constructions, so Sayyiduna Umar (may Allah be pleased with him) said: O people of Arabia! Beware of the earth, beware of the earth. Islam cannot be established without a community, and a community cannot exist without governance, and governance and leadership cannot be established without obedience. So, whoever is made a leader by his people on the basis of knowledge and understanding, he is a source of life for himself and his people, and whoever is made a leader by his people without understanding, it is destruction for him and his people.