Article 249- It is not permitted for Muhrim to look his/her spouse with sexual desire; but talking and looking without the intention of pleasure has not problem and can associate with him/her like other Mahram persons.
Article 250- Whenever a Muhrim looks his/her spouse with sexual desire then he/she should pay the atonement of one sheep, and if he ejaculates because of this act then it is obligatory precaution to pay the atonement of one camel.
Article 251- Whenever Muhrim looks at a woman other than his wife and ejaculates because of this act then it is obligatory precaution to pay the atonement of one camel if he can and if he cannot one cow and if he cannot pay that either pays the atonement of one sheep.