Where does “gülab” come from?

gülab (Azerbaijani) comes from Classical Persian گلاب, from Classical Persian گل, from Arabic نُور, from Classical Persian جَان, from Middle Persian 𐫃𐫏𐫀𐫗, from Proto-Iranian *wyaHnáH, from Proto-Indo-Iranian wyaHnás, from Proto-Indo-European h₂enh₁‑ — to breathe.

gülab (Azerbaijani): rosewater