2 verses have
swears
in Edition Clear Qur'an by Talal Itani / An-Noor (The Light)

24:6As for those who accuse their own spouses, but have no witnesses except themselves, the testimony of one of them is equivalent to four testimonies, if he swears by God that he is truthful.

24:8But punishment shall be averted from her, if she swears four times by God, that he is a liar.