Ebla

íb-dum; ì-ba-dum - Sum. SAG.KÉŠ (VE 253a; Krebrenik 1983: 12)

if interpreted as ‘slave’ must be due to WS import

PCS
*ˁabd- - male slave (Kogan 2011: 237; Kogan 2015: 181)
verbal root *ˁbd is likely to be denominal