Do you mean
I'll leave it there for the moment! ?
It means ' I won't take it now'. For example, someone makes you a drink, and puts it on the kitchen counter. You already have your hands full with plates of food to take to the dining table. You might say 'I'll leave it there for the moment', meaning that you'll go to the table, put down the plates, and then come back in few moments to get the drink.