Hekayat 85 from Chapter 8 of Golestan of Saadi

Lying leaves a lasting wound that even if healed, the scar remains. Just like the brothers of Joseph, who were known for their lies, were not trusted even when they spoke the truth. 'No, your souls have enticed you to something.'

One who is accustomed to honesty,

If they make a mistake, they are forgiven.

But if one is known for lying,

Even their truth will not be believed.

دروغ گفتن به ضربت لازم ماند که اگر نیز جراحت درست شود، نشان بماند. چون برادران یوسف که به دروغی موسوم شدند نیز به راست گفتن ایشان اعتماد نماند. قالَ بَل سَوَّلَت لَکُم اَنفُسُکُم اَمرا.

یکی را که عادت بود راستی

خطایی رود در گذارند از او

و گر نامور شد به قول دروغ

دگر راست باور ندارند از او