Sanhedrin 46B

ולא היו מתאבלין, אבל אוננין, שאין אנינות אלא בלב.

And the relatives of the executed man would not mourn him with the observance of the usual mourning rites, so that his unmourned death would atone for his transgression; but they would grieve over his passing, since grief is felt only in the heart.

גמ׳ תנו רבנן: אילו נאמר ״חטא ותלית״, הייתי אומר תולין אותו ואחר כך ממיתין אותו, כדרך שהמלכות עושה. תלמוד לומר: ״והומת ותלית״⁠ – ממיתין אותו ואחר כך תולין אותו. הא כיצד? משהין אותו עד סמוך לשקיעת החמה, וגומרין את דינו, וממיתין אותו, ואחר כך תולין אותו. אחד קושר ואחד מתיר, כדי לקיים מצות תלייה.

Talmud: A baraita states: Were it stated: And if a man has committed a sin worthy of death you should hang him on a tree, I would have said that first they hang him and only afterward they put him to death, the way the non-Jew government does, executing the transgressor by hanging. Therefore, the verse states: “And if a man has committed a sin worthy of death, and he is put to death, and you should hang him on a tree” (Deuteronomy 21:22), teaching that first they put him to death, and only afterward they hang him. How so? They delay the verdict until it is near to sunset, and then they conclude his judgment, and they put him to death, and immediately afterward hang him. One ties him to the hanging post, and another immediately unties him, in order to fulfill the mitzva of hanging the corpse of the executed transgressor.

תנו רבנן: ״עץ״⁠ – שומע אני בין בתלוש בין במחובר. תלמוד לומר ״כי קבור״⁠ – מי שאינו מחוסר אלא קבורה, יצא זה שמחוסר קציצה וקבורה.

A baraita states: From the verse: “And you should hang him on a tree,” I would derive that the body may be hung either on a tree that has been detached from the ground or on one that is still attached to the ground. Therefore, the verse states: “His body should not remain all night upon the tree, but you should bury him [kavor tikberennu] that day” (Deuteronomy 21:23). Based on the doubled verb, it is derived that not only must the transgressor’s body be buried, but the tree on which it is hung must also be buried. As the verse employs the same term to instruct that both must be buried, the verse teaches that the corpse must be hung on a tree that has already been detached from the ground and is lacking only burial, just as the corpse is lacking only burial. This serves to exclude hanging the corpse on a tree that is still attached to the ground and is lacking both cutting down and burial.