Bulugh al-Maram #493

Narrated Ibn Mas'ud (RA): Allah's Messenger (ﷺ) said: "The one who knows the Book of Allah most should be the Imam of the people. If they are equal in the recitation, then the one who knows the Sunnah most and if they are equal in the Sunnah then the earliest of them to emigrate (to al-Madinah) and if they are equal in the emigration then the oldest among them in Islam. In another narration it has "agewise". And no man should lead another in prayer in his domain or sit in his place of honor without his permission." .