כֵּֽן־תַּעֲשֶׂ֥ה לְשֹׁרְךָ֖ לְצֹאנֶ֑ךָ שִׁבְעַ֤ת יָמִים֙ יִהְיֶ֣ה עִם־אִמּ֔וֹ בַּיּ֥וֹם הַשְּׁמִינִ֖י תִּתְּנוֹ־לִֽי׃
Assim farás com o teu boi e com o teu rebanho: por sete dias ele permanecerá com sua mãe; no oitavo dia, o darás a Mim.
Leviticus
Speak to Bnei Yisroel, saying, when a woman conceives and gives birth to a male child she will be ritually unclean for seven days; as the days of her menstrual flow, she will be unclean.