Yusuf • EN-TAFSIR-IBN-ABBAS
﴿ فَلَمَّا جَهَّزَهُم بِجَهَازِهِمْ جَعَلَ ٱلسِّقَايَةَ فِى رَحْلِ أَخِيهِ ثُمَّ أَذَّنَ مُؤَذِّنٌ أَيَّتُهَا ٱلْعِيرُ إِنَّكُمْ لَسَٰرِقُونَ ﴾
“And [later,] when he had provided them with their provisions, he placed the [King's] drinking-cup in his brother's camel-pack. And [as they were leaving the city,] a herald called out: "O you people of the caravan! Verily, you are thieves!”
(And when he provided them with their provision) when he measured for them their provision, (he put the drinking cup in his brother's saddlebag) he hid his drinking cup which he also used for measurement in the saddlebag of his brother Benjamin. He then ordered them to leave and when they left he sent a youth after them, (and then a crier cried) the youth that Joseph sent cried: (O camel riders!) O people of the caravan (You are surely thieves!)