I prayed with the Messenger of Allah ﷺ and he lengthened it till I entertained an evil thought. It was said to him what that thought was. He said: I thought that I should sit down and forsake him.

عَبْدُ اللَّهِ صَلَّيْتُ مَعَ رَسُولِ اللَّهِ ﷺ فَأَطَالَ حَتَّى هَمَمْتُ بِأَمْرِ سَوْءٍ قَالَ قِيلَ وَمَا هَمَمْتَ بِهِ قَالَ هَمَمْتُ أَنْ أَجْلِسَ وَأَدَعَهُ