An-Nahl (The Bee)
Surah 16 · Verse 102
Say, “The holy spirit has brought it down from your Fosterer in truth, that those who believe may be established, and (it is) a guidance and good news for those who submit (as Muslims).”
Nothing in the Quran was forged by prophet Muhammed (PBH), the whole Quran was revealed to him by Allah (SWT) through the holy spirit Jibreel (PBH).
