His Guidance in the Treatment of Hypocrites

He accepted their outward show of belief, leaving their inner intentions to Allah. He opposed them with convincing argument or

by avoiding them. At times, he might speak harshly to them or use expressive words to reach their consciences.

He avoided killing hypocrites in order to keep hearts in harmony. When suggested that he should kill them, he  responded, “No,
otherwise people will say that Muhammad kills his companions”