414. Earlier scriptures were named as Quran. 

The term ‘Quran’ refers to the scripture Quran revealed to Prophet Muhammad, but sometimes it is found being used to mention earlier scriptures before Prophet Muhammad.

The word ‘Quran’ is referred to the scripture that was bestowed upon Prophet Muhammad. In verses (15:89, 90, 91) of the Quran we find the phrase ‘We will decimate the same way as we did the people of the earlier times who divided the Quran into parts by rejecting some parts and accepting others. Since this verse talks about an earlier scripture it cannot be taken as referring to the Quran, but as a reference to the scripture of the time.

In the same way we also find Prophet Muhammad making use of the word Quran to refer to earlier scriptures.

It was made easier for Prophet Dawood to recite the Quran, (Bukhari:3417)

The scripture called as the Quran was not revealed at the time of Prophet Dawood, he was bestowed with the scripture Zabur. He should have recited from Zabur and hence should have understood the mention of the Quran as Zabur.