وَقَالَ لِلَّذِي ظَنَّ أَنَّهُ نَاجٍ مِّنْهُمَا اذْكُرْنِي عِندَ رَبِّكَ فَأَنسَاهُ الشَّيْطَانُ ذِكْرَ رَبِّهِ فَلَبِثَ فِي السِّجْنِ بِضْعَ سِنِينَ

Then he said to the one whom he knew would be delivered from among the two: ‘Mention me to your master.’ But Satan caused him to forget mentioning [it] to his master. So he remained in the prison for several years.