Quran 12:73 — Joseph (Yousuf)

قالوا تَاللَّهِ لَقَد عَلِمتُم ما جِئنا لِنُفسِدَ فِى الأَرضِ وَما كُنّا سٰرِقينَ

They said, "By GOD, you know full well that we did not come here to commit evil, nor are we thieves."

[12:72] They said, "We lost the king's cup. Anyone who returns it will receive an extra camel-load; I personally guarantee this."

[12:74] They said, "What is the punishment for the thief, if you are liars?"