Where does “мурғоби” come from?

мурғоби (Yagnobi) comes from Tajik мурғобӣ, from Persian مرغابی, from Persian آبی, from Persian آب, from Middle Persian ʾp̄, from Old Persian 𐎠𐎱𐎡𐎹𐎠, from Proto-Iranian Hā́fš, from Proto-Indo-Iranian Hā́ps — water, body of water.

мурғоби (Yagnobi): duck

Definitions

duck

Ancestry of “мурғоби”, step by step

Step	Language	Word	Meaning
1	Tajik	мурғобӣ	duck
2	Persian	مرغابی	duck; wild duck
3	Persian	آبی	blue; aquatic; aqueous
4	Persian	آب	water; liquid; juice
5	Middle Persian	ʾp̄	water
6	Old Persian	𐎠𐎱𐎡𐎹𐎠	into the water
7	Proto-Iranian	Hā́fš	water
8	Proto-Indo-Iranian	Hā́ps	water
9	Proto-Indo-European	h₂ep-	water, body of water

Every word from Proto-Indo-European h₂ep- →Every word from Proto-Indo-Iranian Hā́ps →Every word from Proto-Iranian Hā́fš →