1327 – On the authority of Abū Hurayrah (may Allah be pleased with him) who said: The Messenger of Allah (peace and blessings be upon him) said, “Beware of suspicion, for suspicion is the most deceitful of speech.” Agreed upon. (1)

Vocabulary of the ḥadīth
– iyyākum wa’l-ẓann: the term iyyākum is in the accusative, functioning as the direct object of an omitted verb whose implied meaning is “beware.”
– al-ẓann: either conjoined to iyyākum or serving as the direct object of the same omitted verb, with the implied meaning “beware.”

Lessons derived from the ḥadīth
This ḥadīth warns against suspicion. The prohibition concerns harboring ill thoughts about a Muslim whose outward behavior indicates righteousness; it is impermissible to think evil of such a person, and one must judge him according to what is apparent. In this case suspicion is a lie, for it contradicts reality.

As for suspicion regarding those known for doubtful matters or open sinfulness, this warning does not apply to them, for their own deeds testify to their misconduct and lack of uprightness. The explanation of this point has already preceded.

Allah knows best.