LXX Num 15:14

ἐὰν δὲ προσήλυτος ἐν ὑμῖν προσγένηται ἐν τῇ γῇ ὑμῶν ἢ ὃς ἀν’ γένηται ἐν ὑμῖν ἐν ταῖς γενεαῖς ὑμῶν, καὶ κάρπωμα ὀσμὴν εὐωδίας κυρίῳ, ὃν τρόπον ποιεῖτε ὑμεῖς, οὕτω ἡ συναγωγὴ Κυρίῳ.

And for the generations to come, if a foreigner residing with you or someone else among you wants to prepare an offering made by fire as a pleasing aroma to the LORD, he is to do exactly as you do.