Where does “yšt'” come from?

yšt' (Pahlavi) comes from Avestan 𐬫𐬀𐬱𐬙𐬀, from Avestan 𐬫𐬀𐬰, from Proto-Indo-European h₁yaǵ- — to sacrifice; to worship.

Ancestry of “yšt'”, step by step

StepLanguageWordMeaning
1Avestan𐬫𐬀𐬱𐬙𐬀—
2Avestan𐬫𐬀𐬰to worship, honor; to worship, honor, venerate
3Proto-Indo-Europeanh₁yaǵ-to sacrifice; to worship
Every word from Proto-Indo-European h₁yaǵ- →Every word from Avestan 𐬫𐬀𐬰 →Every word from Avestan 𐬫𐬀𐬱𐬙𐬀 →