What are the criteria for adopting the easier opinion among fatwas for someone suffering from waswas (obsessive doubts/thoughts), and what is the ruling on the divorce of someone suffering from waswas who thought he had divorced due to waswas, being ignorant that waswas is a barrier to divorce? And can he adopt the easier opinion to feel that his wife is lawful, and can someone suffering from waswas take advantage of a concession in a specific matter?

"The person afflicted with Waswas (obsessive doubts) is advised to disregard them and not pay attention to them. The divorce of a person afflicted with Waswas does not take effect unless he genuinely intended and willed it in a state of tranquility and stability. It is not permissible to combine the occurrence of divorce with adopting the easiest opinion. So, either the divorce occurred under the influence of Waswas, in which case it does not take effect, or it occurred with intention and will, in which case it is an irrevocable divorce (baynunah kubra) according to the majority of scholars. As for the daughter, she is attributed to you in all cases."