That the nazirite not eat damp grapes: That the nazirite not eat damp (fresh) grapes, as it is stated (Numbers 6:3), “and damp, etc. grapes shall he not eat.” And they, may their memory be blessed, said in Tractate Nazir 35b, “‘And damp [etc.] grapes, shall he not eat’ [is to include] unripe fruit (boser).” The entire content of this commandment is [found] in the commandment before it (Sefer HaChinukh 368).

I will write from the roots of the matter of naziriteness below in the commandment of growing the hair of the nazirite (Sefer HaChinukh 374).