It is narrated from Sayyiduna Ibn Mas'ud, may Allah be pleased with him, in the commentary of « ﴿وَلَقَدْرَآهُنَزْلَةًأُخْرَى﴾ »[النجم : 13] that the Prophet, peace and blessings be upon him, said: "I saw Jibreel Amin (the Trustworthy Gabriel) in his original form near Sidrat al-Muntaha; he had six hundred wings, from which pearls and rubies were falling."
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 3915