Ebla

ù-ru₁₂ /ˀurru/ - light (VE 817, Kogan–Krebernik 2021b: 683)

in ù-ru₁₂ mu-si-im /ˀurru mūšim/ ‘light of the night’

PS
*ˀr - light (Fronzaroli 1965a: 138, 144; Kogan 2011: 196)