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