הֲיִקְבַּ֨ע אָדָ֜ם אֱלֹהִ֗ים כִּ֤י אַתֶּם֙ קֹבְעִ֣ים אֹתִ֔י וַאֲמַרְתֶּ֖ם בַּמֶּ֣ה קְבַעֲנ֑וּךָ הַֽמַּעֲשֵׂ֖ר וְהַתְּרוּמָֽה׃
Will a man rob God? Yet ye rob Me. But ye say: ‘Wherein have we robbed Thee?’ In tithes and heave-offerings.
Rashi on Malachi
Will a man rob Our Sages explained this as an expression of robbery, and it is an Aramaism.
Rashi on Malachi
With tithes and with the terumah levy The tithes and the terumah - levy that you steal from the priests and the Levites is tantamount to robbing Me.