Where does “پ” come from?

پ (Persian) comes from Persian ب, from Arabic ب, from Arabic طَابَق, from Middle Persian tʾp̄k', from Proto-Iranian tāpaka-, from Proto-Iranian tap-, from Proto-Indo-European tep- — to be warm, be hot.

Ancestry of “پ”, step by step

StepLanguageWordMeaning
1PersianبB
2ArabicبAbbreviation of باب; with, by; with
3Arabicطَابَق—
4Middle Persiantʾp̄k'frying pan
5Proto-Iraniantāpaka-heater {{non-gloss definition|or}} baking place...
6Proto-Iraniantap-to warm up, heat; flat
7Proto-Indo-Europeantep-to be warm, be hot
Every word from Proto-Indo-European tep- →Every word from Proto-Iranian tap- →Every word from Proto-Iranian tāpaka- →