Abu Ya'la Ma'qil bin Yasar (May Allah be pleased with him) reported: Messenger of Allah ﷺ said, "Any slave whom Allah makes him in charge of subjects and he dies while he is not sincere to them, Allah will make Jannah unlawful for him". Al-Bukhari and Muslim. Another narration is: Allah's Messenger ﷺ said, "He who does not look after his subjects with goodwill and sincerity, will be deprived of the fragrance of Jannah". A narration in Muslim is: Messenger of Allah ﷺ said, "A ruler who, having control over the affairs of the Muslims, does not strive diligently for their betterment and does not serve them sincerely, will not enter Jannah with them".