Menachos5: 4
וְחַיָּב עַל הַשֶּׁמֶן בִּפְנֵי עַצְמוֹ, וְעַל הַלְּבוֹנָה בִּפְנֵי עַצְמָהּ. נָתַן עָלֶיהָ שֶׁמֶן, פְּסָלָהּ. לְבוֹנָה, יִלְקְטֶנָּה. נָתַן שֶׁמֶן עָל שְׁיָרֶיהָ, אֵינוֹ עוֹבֵר בְּלֹא תַעֲשֶׂה. נָתַן כְּלִי עַל גַּבֵּי כְלִי, לֹא פְסָלָהּ.
He is liable for the oil by itself and on the frankincense by itself. [If] he placed oil upon it, he has invalidated it. [If he added] frankincense, he should remove it. [If] he placed oil on its remainder, he does not transgress a prohibition. [If] he placed a vessel upon a vessel, he does not invalidate it.