利未记 15:18

若男女交合，两个人必不洁净到晚上，并要用水洗澡。

ruò nán nǚ jiāo hé ， liǎng gè rén bì bù jié jìng dào wǎn shang ， bìng yào yòng shuǐ xǐ zǎo 。

If a man lies with a woman and there is an emission of semen, they shall both bathe themselves in water, and be unclean until the evening.