Where does “Раҳмон” come from?

Раҳмон (Tajik) comes from Arabic رحمن, from Arabic ح — ب; ج.

Ancestry of “Раҳмон”, step by step

Step	Language	Word	Meaning
1	Arabic	رحمن	merciful, compassionate; third-person feminine...
2	Arabic	ح	ب; ج