Occasionally, Muslims with a sickness in their hearts might act like a hypocrite. They are not hypocrites per se, but they have a sickness in their hearts; God informs us of this in a verse of the Qur'an, saying, "They have sickness in their hearts." They act in the exact manner of a hypocrite. This is a phase they are going through. Sometimes they recover from it, and sometimes they succumb to the disease that is hypocrisy. - Harun Yahya