The Ruling on Deceiving a Disbeliever and Tricking Him

The questioner:
He may consult you, may Allah have mercy on him, so that you think that deception is from Allah, the one who is carried and the one who is blamed, that his father is without right, but what is the ruling on deceiving the disbeliever, whether from a humble person or a noble one, and if al-Zahiri says yes, to which clever person, and what is the judgment of that?

The Shaykh:
If there is no injustice toward the disbeliever and there is no obstacle, provided it is for the sake of supporting the truth. If it is for the sake of supporting the truth, [to] ward off the harm of the disbeliever from the Muslims as the Prophet (peace and blessings be upon him) said, but if there is injustice toward the disbeliever without right, this is not permissible. Yes.

The questioner:
May Allah welcome you.

The Shaykh:
If there is injustice toward the disbeliever, taking his right, and transgressing against him, then this is not permissible. Yes.