Yusuf - 12:75

قَالُواْ جَزَآؤُهُ مَن وُجِدَ فِي رَحْلِهِ فَهُوَ جَزَاؤُهُ كَذَلِكَ نَجْزِي الظَّالِمِينَ
[12:75]
They said: The requital of this is that the person in whose bag it is found shall himself be (held for) the satisfaction thereof; thus do we punish the wrongdoers.
They said: "The penalty should be that he in whose saddle-bag it is found, should be held (as bondman) to atone for the (crime). Thus it is we punish the wrong-doers!"
They said: The penalty for it! He in whose bag (the cup) is found, he is the penalty for it. Thus we requite wrong-doers.