What is the ruling on obsessive thoughts related to mocking religion, and are the actions of a person suffering from obsessive thoughts considered disbelief if they are unable to repel them, such as obsessive thoughts about stepping on the place of prostration, or obsessive thoughts about other actions resembling mockery? And is someone's sarcastic remark, "Eat the carrots, you rabbit," considered disbelief?

Not every action or conversation is considered mockery. Smiling at committed Muslims out of joy for them is not considered mockery. However, if it is indeed mockery, then it is blameworthy, as Allah Almighty says: "O you who have believed, let not a people ridicule [another] people; perhaps they may be better than them." Mockery is a sin that requires repentance, but it is not disbelief (kufr) unless certain conditions apply to it. One must be wary of obsessive whispers (waswasa), especially in this matter, for a person whose Islam is established with certainty is not removed from it except with certainty. A Muslim does not disbelieve except through an action, statement, or belief that the Qur'an and Sunnah indicate to be major disbelief, or upon which the scholars have reached a consensus, and with the fulfillment of the conditions for declaring someone a disbeliever and the absence of impediments. A person suffering from obsessive-compulsive disorder is not considered to be acting by choice, and the cure for this is to completely ignore the obsessive whispers and occupy one's time with what is beneficial.