Why did Shlomo ask Hashem to punish the Rasha?
Refer to Melachim I, 8:32:2:1,2.
Which Rasha should be punished?
Radak: One who swears falsely or makes another swear without reason, and the latter swears truthfully. The punishment is on the one who made him swear.
What is "Lases Darko b'Rosho"?
'Rashi' (from Tosefta Sotah 1:4): Her stomach will swell? 1 (Bamidbar 5:27). It is masculine, for just like the water checks the Sotah (kills her if she sinned), so it checks him (the Bo'el. ? Sotah 5:1).
Sotah 8b: She is punished Midah k'Neged Midah. She sinned with the thigh and stomach, so her thigh falls off and her stomach swells.
Why does it say "to vindicate the Tzadik"?
'Rashi': [If she is innocent], "she will be cleansed, and bear seed" (Bamidbar 5:28).
