The Messenger of Allah ﷺ said, "I saw Jibreel descending, filling all that lies between the heavens and the earth. He was clothed in fine silk garments adorned with hanging pearls and rubies."
حدثنا عفان حدثنا حماد قال أخبرنا عطاء بن السائب عن الشعبي عن مسروق
أن رسول الله ﷺ قال رأيت جبريل عليه السلام منهبطا قد ملأ ما بين السماء والأرض وعليه ثياب سندس معلقا به اللؤلؤ والياقوت
No references are available.
Its chain of transmission is sahih. Haythami said in 8/257, "Ataa's memory became confused, but he was corroborated, so the hadith is very well known from the account of the beginning of the revelation." It is in the Sahihayn.