vindication of innocence

ثُمَّ بَدَا لَهُم مِّنۢ بَعْدِ مَا رَأَوُا۟ ٱلْـَٔايَـٰتِ لَيَسْجُنُنَّهُۥ حَتَّىٰ حِينٍ

Then it appeared to them after they had seen the signs that he [i.e., al-ʿAzeez] should surely imprison him for a time.