Noun
hakam (plural hakams)
(Islam) An arbitrator.
Al Baldiah wal nahaiyah vol: 7 page 141 In late 644 AD Caliph Umar dispatched an army under the command of Hakam ibn Amr for the wholesale invasion of Makkuran. Source: Internet
Imam Abu Muhammad Adbullah ibn Abdul Hakam stated that Umar ibn Abd al-Aziz also stopped the personal allowance offered to his relatives stating that he could only give them an allowance if he gave an allowance to everyone else in the empire. Source: Internet