Jibreel came to the Messenger of Allah ﷺ while he was playing with the other boys. He took hold of him, laid him down, opened his chest, and removed his heart. The hadith continues.
أن رسول الله ﷺ أتاه جبريل وهو يلعب مع الغلمان، فأخذه فصرعه فشق عن قلبه فاستخرج القلب. الحديث.
Muslim narrated it in the Book of Faith (162:261), from Shayban bin Farroukh, who said, "Hammad bin Salama narrated to us, from Thabit Bunani, from Anas bin Malik," and he mentioned the hadith about the story of the Isra and Miraj.