Mukhtasar Bukhari

‘Sayyiduna Ibn Abbas (may Allah be pleased with them both) says:’ The Messenger of Allah (peace and blessings be upon him) sent a letter by the hand of a person and instructed him to deliver this letter to the ruler of Bahrain. (So he delivered it.) And the ruler of Bahrain forwarded it to Kisra (the king of Persia). Then when (Kisra) read it, (out of his wretchedness) he tore it up. (Sayyiduna Ibn Abbas, may Allah be pleased with them both,) says that when the Messenger of Allah (peace and blessings be upon him) heard this, he invoked a curse upon those people, saying: “They (too) shall be torn to pieces in the same way.”