Question 1684) - A woman institutes a claim of slander and the judge orders Li'an. The husband is prepared to undergo it, but she now refuses" What will the judge do?

A: Li'an is Wajib upon her if the husband is prepared to do it. If she refuses, the judge will detain her until she performs the Li'an or verifies her husband's accusation.*

* In which case he will not be punished for slander, nor will she be punished for adultery simply for verifying the husband. [ad-Durr al-Mukhtar]

~ al-Quduri~