Numbers 7:10

ויקריבו הנשאים את חנכת המזבח AND THE PRINCES OFFERED FOR DEDICATING THE ALTAR — After they had presented the waggons and the oxen for carrying the Tabernacle, their heart prompted them to present offerings for the altar, in order to dedicate it (Here, ויקריבו denotes: they offered sacrifice). ויקריבו הנשיאם את קרבנם לפני המזבח AND THE PRINCES BROUGHT THEIR OFFERING BEFORE THE ALTAR, because Moses would not accept them at their hands until he was so bidden by the mouth of the Almighty (Sifrei Bamidbar 47).

And the princes offered for dedicating of the altar in the day that it was anointed, and the princes offered their offering before the altar.

וַיַּקְרִ֣יבוּ הַנְּשִׂאִ֗ים אֵ֚ת חֲנֻכַּ֣ת הַמִּזְבֵּ֔חַ בְּי֖וֹם הִמָּשַׁ֣ח אֹת֑וֹ וַיַּקְרִ֧יבוּ הַנְּשִׂיאִ֛ם אֶת־קׇרְבָּנָ֖ם לִפְנֵ֥י הַמִּזְבֵּֽחַ׃