The Qur'ĝn, literally "the recitation"; also called Quran, Koran, and Al-Quran), is the central religious text of Islam. Muslims believe the Qur'an, in its original Arabic, to be the literal word of Islamic God that was revealed to Prophet Muhammad over a period of twenty-three years until his death, and Muslim's believe it to be God's final revelation to humanity.
The Qur'anic verses were originally memorised by Muhammad's companions as Muhammad spoke them, with some being written down by one or more companions on whatever was at hand, from stones to pieces of bark. Compilations of the Qur'an began under the Caliph Umar, but it was Uthman who decided upon a definitive copy and destroyed all other versions that had resulted from the differences of pronunciation of the words.
References in Guru Granth Sahib
ਕਵਣ ਸ ਵੇਲਾ ਵਖਤ ਕਵਣ ਕਵਣ ਥਿਤਿ ਕਵਣ ਵਾਰ ॥
ਕਵਣਿ ਸਿ ਰਤੀ ਮਾਹ ਕਵਣ ਜਿਤ ਹੋਆ ਆਕਾਰ ॥
ਵੇਲ ਨ ਪਾਈਆ ਪੰਡਤੀ ਜਿ ਹੋਵੈ ਲੇਖ ਪਰਾਣ ॥
ਵਖਤ ਨ ਪਾਇਓ ਕਾਦੀਆ ਜਿ ਲਿਖਨਿ ਲੇਖ ਕਰਾਣ ॥
What was that time, and what was that moment? What was that day, and what was that date?
What was that season, and what was that month, when the Universe was created?
The Pandits, the religious scholars, cannot find that time, even if it is written in the Puraanas.
That time is not known to the Qazis, who study the Koran.
Guru Nanak Dev Page 4
ਪੰਜ ਵਖਤ ਨਿਵਾਜ ਗਜਾਰਹਿ ਪੜਹਿ ਕਤੇਬ ਕਰਾਣਾ ॥
ਨਾਨਕ ਆਖੈ ਗੋਰ ਸਦੇਈ ਰਹਿਓ ਪੀਣਾ ਖਾਣਾ ॥੪॥੨੮॥
You may chant your prayers five times each day; you may read the Bible and the Koran.
Says Nanak, the grave is calling you, and now your food and drink are finished.
Guru Nanak Dev Page 24