Numbers 6:15

ומנחתם ונסכיהם AND THEIR MEAL-OFFERING AND THEIR DRINK-OFFERINGS — i.e., those of the burnt-offering and the feast-offerings (mentioned in v. 14; no חטאת except that of a leper requires נסכים). Because these (the עולה and the שלמים of the Nazir) are included in (come under) the general rule governing עולה and שלמים and have here been excepted to become subject to a new matter, viz., that they require an offering of bread together with them. Scripture restores them to the general rule by expressly stating that they require drink-offerings (and meal-offerings) as is the law of עולה and שלמים in general (Sifrei Bamidbar 34). חלות מצות ורקיקי מצות (the word מצות must be connected with חלות too) PIERCED CAKES UNLEAVENED AND WAFERS OF UNLEAVENED BREAD — ten of each kind (Menachot 77b).

וְסַ֣ל מַצּ֗וֹת סֹ֤לֶת חַלֹּת֙ בְּלוּלֹ֣ת בַּשֶּׁ֔מֶן וּרְקִיקֵ֥י מַצּ֖וֹת מְשֻׁחִ֣ים בַּשָּׁ֑מֶן וּמִנְחָתָ֖ם וְנִסְכֵּיהֶֽם׃

and a basket of unleavened bread, cakes of fine flour mingled with oil, and wafers of unleavened bread anointed with oil, and their meal offering, and their drink offerings.