If I were to know that you had been peeping through the door, I would have thrust that into your eyes, and Messenger of Allah ﷺ said: Permission is needed as a protection against glance. (Using translation from Muslim 2156a)
أَخْبَرَهُ أَنَّ رَجُلًا اطَّلَعَ فِي جُحْرٍ فِي حُجْرَةِ النَّبِيِّ ﷺ وَمَعَ رَسُولِ اللَّهِ ﷺ مِدْرًى يُخَلِّلُ بِهَا رَأْسَهُ فَرَآهُ رَسُولُ اللَّهِ ﷺ فَقَالَ لَوْ أَعْلَمُ أَنَّكَ تَنْظُرُنِي لَطَعَنْتُ بِهَا فِي عَيْنَيْكَ وَقَالَ رَسُولُ اللَّهِ ﷺ «إِنَّمَا جُعِلَ الْإِذْنُ مِنْ أَجْلِ النَّظَرِ»