Archangels. Jibra'il/Jibril/Jabril (Judeo-Christian: Gabriel), the angel of revelation. Jibra'il is the archangel responsible for revealing the Quran to Muhammad, verse by verse.

3 times nominally. Although in multiple places angel Gabriel (Jibril) was alluded and implicitly mentioned. As an example, in verse 98 of chapter 2, Almighty Allah mentioned angel Gabriel in name.