The Prophet (saw) said: "I saw Jibreel descending from heaven, and his great size filled the space between heaven and earth." (Reported by Muslim, no. 177)
The greatest of all the angels is Jibreel (Gabriel), upon whom be peace, who was described in the following report:
"From ‘Abdullaah ibn Mas‘ood, who said: the Messenger of Allah (Peace & Blessings of Allaah be upon Him) saw Jibreel in his true form. He had six hundred wings, each of which covered the horizon. There fell from his wings jewels, pearls and rubies, only Allah knows about them." It was reported by Ahmad in al-Musnad, and Ibn Katheer said in al-Bidaayah 1/47 that its isnaad is jayyid.
Subject: 600 Wings With Jewels, Pearls and Rubies 
