Quran was revealed in aprrox 22 and a half years. Does anyone have the exact total time for this with a authentic source?
When were the first and last verse revealed in respect to Hijrat or Prophet's age ?
From the Qur'an and the tradition, scholars say that Qur'an was revealed twice.
Once, it was revealed in full at the night of Qadr. Although scholars have not reached a consensus as to its time and place.
Second time it was gradually revealed in a span of 23 years.