Silsilat al-Ahadith al-Sahihah

Sayyiduna ‘Ubada bin Samit (may Allah be pleased with him) narrates that the Noble Prophet (peace and blessings of Allah be upon him) said: “O Allah! Whoever oppresses the people of Madinah or frightens and threatens them, then You also frighten him. Upon such a person is the curse of Allah, the angels, and all people. Neither his obligatory worship is accepted nor his voluntary.”