'A'isha said, "I heard the Messenger of Allah, may Allah bless him and grant him peace, say in this house of his, 'O Allah, anyone who is appointed over any of the affairs of my community and is hard on them, I will be hard on him. Anyone who is appointed over any of the affairs of my community and is kind to them, I will be kind to him."
Riyadh-as-Saliheen by Imam Al-Nawawi, volume 4, hadith number 655 - Sunni Hadith