«مِنْ أَمِّنَكْ لَمْ تُخُونُهْ وَلَوْ كُنْتْ خَوَّانْ»

The saying addresses someone entrusted with another person's confidence and tells him not to betray it. The opening negative is read as a prohibition, so the verb works as a command rather than a report of past conduct. The conditional clause concedes a treacherous disposition in the listener, yet holds that his nature does not license disloyalty.

In another wording, the last clause refers to the person who placed the trust: even if that person is treacherous, the listener must not betray the confidence. That is a distinct wording, not a second grammatical reading of the version printed here. Both versions demand fidelity to a trust.

Suited to advice about confidences, private information, or responsibilities handed to someone. It fits a moment when a person is tempted to exploit a trust placed in him, reminding him to stay faithful whatever his own weaknesses.