LXX Num 6:18

καὶ ξυρήσεται ὁ ηὐγμένος παρὰ τὰς θύρας τῆς σκηνῆς τοῦ μαρτυρίου τὴν κεφαλὴν τῆς εὐχῆς αὐτοῦ, καὶ ἐπιθήσει τὰς τρίχας ἐπὶ τὸ πῦρ ὅ ἐστιν ὑπὸ τὴν θυσίαν τοῦ σωτηρίου.

Then at the entrance to the Tent of Meeting, the Nazirite is to shave his consecrated head, take the hair, and put it on the fire under the peace offering.