וָאֶתֵּ֨ן לָכֶ֜ם אֶ֣רֶץ ׀ אֲשֶׁ֧ר לֹֽא־יָגַ֣עְתָּ בָּ֗הּ וְעָרִים֙ אֲשֶׁ֣ר לֹא־בְנִיתֶ֔ם וַתֵּשְׁב֖וּ בָּהֶ֑ם כְּרָמִ֤ים וְזֵיתִים֙ אֲשֶׁ֣ר לֹֽא־נְטַעְתֶּ֔ם אַתֶּ֖ם אֹכְלִֽים׃
Y os dí la tierra por la cual nada trabajasteis, y las ciudades que no edificasteis, en las cuales moráis; y de las viñas y olivares que no plantasteis, coméis.
Sforno
ויאכל תנובות שדי, Moses mentions only the eating, not referring to the labour in the fields leading up to this, eventually. He meant that it would not take any effort to reach the state of eating the produce the land has to offer. Compare Joshua 24,13 “vineyards and olive trees which you did not plant you are eating from.”