Number of offerings to bring, if the Nazirite becomes impure on the night preceding the 8th day of the Purification Count, or on the 8th day itself: Chagigah 9a; Keritot 2b, 8a, 9b
What is done with his shorn hair: Temurah 34a
At what point in the purification process the Nazir "re-dedicates" his hair: Keritot 2b
Whether a nazir brings offerings if he becomes impure intentionally: Keritot 9a
Whether a nazir brings offerings if he becomes impure through circumstances beyond his control: Keritot 9a
Whether a nazir brings multiple offerings if he becomes impure multiple times: Keritot 9a, 9b
May a nazir's purification offerings be brought on his behalf when he is impure, relying on ritzuy tzitz: Zevachim 23a
May a nazir's purification offerings be brought on his behalf when the korban, or the kohen bringing it, is impure, using ritzuy tzitz: Zevachim 23a-b