Anas ibn Malik reported: The Messenger of Allah, peace and blessings be upon him, said, “When Allah formed Adam in Paradise, He left him as long as He willed. Satan walked around him, looking at him. When he saw what was within mankind, he knew they were created with a disposition they would struggle to control.”
Source: Ṣaḥīḥ Muslim 2611
Grade: Sahih (authentic) according to Muslim
عَنْ أَنَسٍ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ لَمَّا صَوَّرَ اللَّهُ آدَمَ فِي الْجَنَّةِ تَرَكَهُ مَا شَاءَ اللَّهُ أَنْ يَتْرُكَهُ فَجَعَلَ إِبْلِيسُ يُطِيفُ بِهِ يَنْظُرُ مَا هُوَ فَلَمَّا رَآهُ أَجْوَفَ عَرَفَ أَنَّهُ خُلِقَ خَلْقًا لاَ يَتَمَالَكُ
2611 صحيح مسلم كتاب البر والصلة والآداب باب خلق الإنسان خلقا لا يتمالك