However...

However, if a person must argue or debate to uphold the truth and destroy falsehood, it is permissible – rather this is the best form of worship and servitude to Allah (Glory and Greatness be to Him) during this noble state. Buying and selling anything. Deriving pleasure from the opposite sex in any way – holding hands, hugging, kissing, etc… is completely forbidden in the state of I’tikaf.

If any of these things are performed, one’s I’tikaf becomes void and in certain cases, a Kaffarah or penitence must be paid out (which will be discussed below).