Anas ibn Malik reported: Gabriel came to the Messenger of Allah, peace and blessings be upon him, when he was a child playing with his friends. Gabriel took hold of him and laid him on the ground, then he tore open his chest, took out his heart, and extracted a blood clot from it. Gabriel said, “This was the measure of Satan inside you.” Gabriel washed his heart with Zamzam water in a golden vessel and it was joined together and restored. The boys came running to his mother and said, “Muhammad has been killed!” They rushed to Muhammad and found that he was alive and his color had changed. Anas said, “I myself saw the marks of the needle on his chest.”
Source: Ṣaḥīḥ Muslim 162
Grade: Sahih (authentic) according to Muslim
عَنْ أَنَسِ بْنِ مَالِكٍ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَتَاهُ جِبْرِيلُ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ وَهُوَ يَلْعَبُ مَعَ الْغِلْمَانِ فَأَخَذَهُ فَصَرَعَهُ فَشَقَّ عَنْ قَلْبِهِ فَاسْتَخْرَجَ الْقَلْبَ فَاسْتَخْرَجَ مِنْهُ عَلَقَةً فَقَالَ هَذَا حَظُّ الشَّيْطَانِ مِنْكَ ثُمَّ غَسَلَهُ فِي طَسْتٍ مِنْ ذَهَبٍ بِمَاءِ زَمْزَمَ ثُمَّ لَأَمَهُ ثُمَّ أَعَادَهُ فِي مَكَانِهِ وَجَاءَ الْغِلْمَانُ يَسْعَوْنَ إِلَى أُمِّهِ يَعْنِي ظِئْرَهُ فَقَالُوا إِنَّ مُحَمَّدًا قَدْ قُتِلَ فَاسْتَقْبَلُوهُ وَهُوَ مُنْتَقِعُ اللَّوْنِ قَالَ أَنَسٌ وَقَدْ كُنْتُ أَرْئِي أَثَرَ ذَلِكَ الْمِخْيَطِ فِي صَدْرِهِ
162 صحيح مسلم كتاب الإيمان باب الإسراء برسول الله صلى الله عليه وسلم إلى السماوات وفرض الصلوات