Probably for ratsown; Retsin, the name of a Syrian and of an Israelite -- Rezin.
see HEBREW ratsown
H7526. Retsin
רְצִין proper name, masculine 1. king of Aram, Ahaz's time: 2 Kings 15:37; 16:5-6, 9; Isaiah 7:1, 4, 8; 8:6; 9:10; Ρα(α)ς(ς)ων, Ρασειν. **Assyrian has Raƒunnu, hence read perhaps רצון, compare WklKAT 3. 135.
2 Ezra 2:48 = Nehemiah 7:50, Ρα(α)σων.