Salam alaikum
According to wikipedia
Nikephoros I or
Nicephorus I, also
logothetēs tou genikou (
Greek: Νικηφόρος Α΄,
Nikēphoros I, "Bringer of Victory"; died July 26, 811), was
Byzantine Emperor from 802 to 811 AD, when he was killed in the
Battle of Pliska.
In 811 Nikephoros invaded
Bulgaria, defeated Krum twice, and sacked the Bulgarian capital
Pliska; however, during Nikephoros' retreat, the Byzantine army was ambushed and destroyed in the mountain passes on
July 26 by
Krum. Nikephoros was captured during the battle and sent to
Pliska, where Krum ordered his decaptitation. Krum is said to have
made a drinking-cup of Nikephoros' skull.
Harun ar-Raschid invaded the Byzantium empire before he became caliph, and he extracted tribute from
Empress Irene, who paid it under a peace treaty. When she was deposed, her usurper,
Nikephoros I Logothetes, rejected her treaty, and wrote to Harun ar-Raschid:
From Nikephoros, the King of Romans, to Ar-Raschid the King of the Arabs, as follows: That woman put you and your father and your brother in the place of kings and put herself i the place of a commoner. I put you in a different place and am preparing to invade your lands and attack your cities, unless you repay me what that woman paid you. Farewell!
Khalifa Harun was so incensed, he wrote the following letter:
In the name of God, the Merciful and the Compassionate, from the servant of God, Harun, Commander of the Faithful, to Nikephoros, the dog of the Romans, as follows: I have understood your letter, and I have your answer. You will see it with your own eyes, not hear it.
https://beyondvictoriana.com/2010/0...lden-age-of-islam-—-guest-blog-by-jaymee-goh/