Hadith 15651
Once, a companion came to Sayyiduna Amir Muawiyah and said, "I heard the Prophet (peace and blessings be upon him) say: Whoever becomes a ruler over any matter and keeps his doors closed to a poor person, an oppressed person, or a needy person, Allah will keep the doors of His mercy closed to him at the time of his need and distress, which will be even more severe."