about "Reconstruction:Proto-Indo-European/bʰeyd-"

What PIE formation does the verb come from?

i don't know, because they are thematic forms (Avestan (biδ-) and Sanskrit (bhed-) and Middle Saka (bid) ) but i couldn't find similar forms from another indo-european languages

We also show forms that cannot be reconstructed for other languages. In that case, the term is not linked, so only the third parameter of {{l}} is used and not the second. Sometimes, further descendants of such a form are found later, and when there are enough, we make them into proper PIE words.

So, if I understand correctly, they are descendants of a hypothetical *bʰéyd-e-ti?

ok, we can add them under *bʰéyd-e-ti