Shaibani narrates: I asked Zar bin Hubaish about this verse: "Indeed, he saw some of the greatest signs of his Lord." The narrator states: Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) said: The Prophet (peace and blessings be upon him) saw Sayyiduna Jibreel (Gabriel), peace be upon him, in his original form; he had 600 wings.
Hadith Referenceصحیح ابن حبان / كتاب التاريخ / 6427
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح: خ (3232)، م (1/ 106).فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح على شرط الشيخين