Narrated `Abdullah:

Regarding the Verses: 'And was at a distance of but two bow-lengths or (even) nearer; So did (Allah) convey the Inspiration to His slave (Gabriel) and then he Gabriel) conveyed (that to Muhammad...' (53.9-10) Ibn Mas`ud narrated to us that the Prophet (ﷺ) had seen Gabriel with six hundred wings.

حَدَّثَنَا أَبُو النُّعْمَانِ، حَدَّثَنَا عَبْدُ الْوَاحِدِ، حَدَّثَنَا الشَّيْبَانِيُّ، قَالَ سَمِعْتُ زِرًّا، عَنْ عَبْدِ اللَّهِ، ‏{‏فَكَانَ قَابَ قَوْسَيْنِ أَوْ أَدْنَى * فَأَوْحَى إِلَى عَبْدِهِ مَا أَوْحَى‏}‏ قَالَ حَدَّثَنَا ابْنُ مَسْعُودٍ أَنَّهُ رَأَى جِبْرِيلَ لَهُ سِتُّمِائَةِ جَنَاحٍ‏.‏
USC-MSA web (English) reference : Vol. 6, Book 60, Hadith 379
Arabic reference : Book 65, Hadith 4856