$.validator.addMethod("isDateLessThan", function(value1, value2) {
    let date1 = new Date(value1);
    let date2 = new Date(value2);
    return date2 <= date1;
}, "Test error message");

$(document).ready(function () {
    var minDate = [[${credit?.condition?.amount.number}]];
    if (minDate) {
        $('#disbursement .valid input[name=disbursmentAmount-number]').rules("add", {
            isDateLessThan: minDate
        });
    }
});