Mishneh Torah — Negative Mitzvot מצוות לא תעשה, Chapter 238
The full Hebrew text of Mishneh Torah, Negative Mitzvot, Chapter 238, with English translation by Maimonides (Rambam).
שלא לאחר פעולת שכיר, שנאמר "לא תלין פעולת שכיר, איתך" (ויקרא יט,יג).
Not to delay payment of a worker, as [Leviticus 19:13] states: "Do not hold back a worker's wages overnight."