(Qasas) 28 : 33
قَالَ رَبِّ إِنِّي قَتَلْتُ مِنْهُمْ نَفْسًا فَأَخَافُ أَنْ يَقْتُلُونِ

He said: "My Lord, indeed I killed one among them, then I fear they will kill me”.

See explanation 28: 15.