What are the implications of "be'Fesa"?
Rashi #1: It implies 'be'Oneis' (unavoidably).
Rashi #2 (citing Targum Onkelos): It implies 'close' - so close that he could not have avoided striking him.
Targum Yonasan: It implies 'be'Shogeg'.
Makos, 7b: It precludes where he is in a corner, and "be'Lo Eivah", a hater. 1
Torah Temimah, note 41: Both of which are Patur from Galus because they are close to Meizid - which is the reason for all the preclusions in this Pasuk - leaving the Rotze'ach at the mercy of the Go'el ha'Dam.
If "be'Fesa" means be'Shogeg, why does the Torah need to add "be'Lo Eivah"?
Refer to 35:22:1.1:4.
Kerisos, 9a: The Torah inserts "be'Lo Eivah" to teach us that "Pesa" on its own means 'be'Shogeg'. 1
See Torah Temimah, note 43.
"Hadafo" implies that he pushed him with his body. Why does the Torah need to add "Vayashlech alav")?
Makos, 7b: To incorporate where he made a downward stroke (such an axe over his shoulder) in order to raise it. 1
Even though had he killed the victim whilst raising the axe he would have been Patur. See Torah Temimah, note 44.
What is the meaning of "be'Lo Tzediyah"?