Sayyiduna Salman al-Farsi (may Allah be pleased with him) said: Goodness will remain as long as the elders continue to teach others, and when the elders pass away before others have acquired knowledge from them, the people will be destroyed.

Ahnaf bin Qais said: Sayyiduna Umar (may Allah be pleased with him) said: Acquire understanding of the religion before you become leaders.

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.