In the name of Allah, the most Beneficent, the most Merciful.

Answer

It is a haq (duty) of the Holy Quran to do a khatam every forty days.  If this is not possible then one should do one khatam per year.  It is not compulsory to read the Holy Quran every day however, one should strive and endeavour to read as much of the Holy Quran as possible so that a khatam can be completed at the very least within a year.   (Mazahirul Haqq p.3 v.3)

The Prophet of Allah Sallallahu Alahi Wasalam said: “Whoever recites the Holy Quran well and clearly is equal in rank to the Angels who record creations deeds. These Angels are gracious, honourable and of lofty rank. He who finds difficulty in reciting the Holy Qur’an will obtain double reward. (Sunan Tirmizi p.118 v.2)

In another hadith the Prophet of Allah Sallallahu Alahi Wasalam said: “A person who recites one letter of the Holy Qur’an, obtains one virtue each virtue multiplies to ten virtues. I am not saying Alif Laam Meem is one letter, but Alif is one letter, Laam is one letter and Meem is one letter.” (Sunan Tirmizi p.119 v.2)

With regards to your question there is a verse in the Holy Quran where Allah (SWA) has said:

‘Now, recite as much of the Quran as is easy (for you)’    (Surah Muzzammil v.20)

However, this verse was revealed about the tahajjud prayers, which abrogated the obligatory status of it and reduced its status to nafl.   (Maariful Quran p.630 v.8)

Only Allah Knows Best

Mohammed Tosir Miah

Darul Ifta Birmingham