Zirr bin Hubaish narrated it on the authority of 'Abdullah (that the words of Allah):" Certainly he saw of the greatest signs of Allah" (al-Qur'an, liii. 18) imply that he saw Gabriel (ؑ) in his (original) form and he had six hundred wings.
Hadith ReferenceSahih Muslim / The Book of Faith / Hadith: 174
Hadith Gradingمحدثین:أحاديث صحيح مسلم كلها صحيحة
Hadith Takhrij«أحاديث صحيح مسلم كلها صحيحة ، تقدم تخريجه برقم (431)»