Explanation

The revelation of the Holy Quran was completed approximately 23 years

The Holy Quran was revealed to Muhammad ﷺ by the angel Gabriel.

The revelation of the Holy Quran began in 609 CE,

1st revelation of Muhammad was made in Hira.

NOTE:

The usual answer is 23 years.

But, to be exact, the Holy Quran was revealed in 22 years 5 months, and 14 days, between 610 to 632 AD

Additional information:

The first revelation of the Holy Quran consisted of 5 Aayats.

2 years and six months was the interval between the first and the second revelation of the Holy Quran

The collection of the holy Quran was completed in two terms:

1. Hazrat Abubakar (RA)

2. Hazrat Usman (RA)

ND4-12-2022

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ND10-1-2023