Erchin1: 4
הָאִשָׁה שֶׁהִיא יוֹצְאָה לֵהָרֵג, אֵין מַמְתִּינִין לָהּ עַד שֶׁתֵּלֵד. יָשְׁבָה עַל הַמַּשְׁבֵּר, מַמְתִּינִין לָהּ עַד שֶׁתֵּלֵד. הָאִשָּׁה שֶׁנֶּהֶרְגָה, נֶהֱנִין בִּשְׂעָרָהּ. בְּהֵמָה שֶׁנֶּהֶרְגָה, אֲסוּרָה בַהֲנָיָה.
[If] a woman is being taken out to be executed, we do not wait for her to give birth. [If] she sat upon the birthstool, we must wait for her to give birth. [If] a woman was executed, we may benefit from her hair. [If] an animal was put to death, any benefit from it is forbidden.