Negative commandment · Lo Ta’aseh #233 of 613
Not to send away a Hebrew servant empty-handed when he goes free
שלא לשלח עבד עברי ריקם כשייצא חופשי
The verse · Devarim 15:13
וְכִי־תְשַׁלְּחֶנּוּ חׇפְשִׁי מֵעִמָּךְ לֹא תְשַׁלְּחֶנּוּ רֵיקָם
“And when thou sendest him out free from thee, thou shalt not let him go away empty:”
The Rambam’s words
Not to send away a Hebrew servant empty-handed when he goes free, as [Deuteronomy 15:13] states: "Do not send him away empty-handed."
שלא לשלח עבד עברי ריקם כשייצא חופשי, שנאמר "לא תשלחנו, ריקם" (דברים טו,יג).
Why · Sefer HaChinuch #481
To not send a Hebrew slave empty
“It is from the roots of the commandment [that it is] in order that we acquire for our souls virtuous, dear and beautiful traits; [such that] with a dear and virtuous soul, we will merit the good — and the good G-d wants to do good for His people.”
Where in the Mishneh Torah
Hilchot Slaves הלכות עבדים