Where does “সোহম” come from?

সোহম (Bengali) comes from Sanskrit सोऽहम्, from Sanskrit अहम्, from Proto-Indo-Aryan aźʰám, from Proto-Indo-Iranian aȷ́ʰám, from Proto-Indo-European éǵh₂ — I.

Ancestry of “সোহম”, step by step

StepLanguageWordMeaning
1Sanskritसोऽहम्"It is I" a phrase used by the Advaita Vedānta school of Hinduism, signifying oneness with Brahma
2Sanskritअहम्I
3Proto-Indo-AryanaźʰámI
4Proto-Indo-Iranianaȷ́ʰámI, we
5Proto-Indo-Europeanéǵh₂I
Every word from Proto-Indo-European éǵh₂ →Every word from Proto-Indo-Iranian aȷ́ʰám →Every word from Proto-Indo-Aryan aźʰám →