Sforno on Exodus 23:31/ספורנו על שמות כ״ג:ל״א

1כי אתן בידכם את יושבי הארץ וגרשתמו, the matter is delivered into your hands, i.e. you have to carry it out. You must not display undue tardiness, laziness. We read in Joshua 18,3 that Joshua was complaining to his people about their being deliberately slow in carrying out the task of disposing of all the Canaanites. (“how long are you going to be dragging your feet to take possession of the land which the G’d of your fathers has given to you?” Joshua speaking to the people at a time when 7 tribes had not yet received portions of the land.).