You must have a wird of recitation of the Mighty Book to be read every day. The least you should do is read on juz’ [one thirtieth of the Qur’an] so that you complete it once a month, and the most is to complete it every three days.
Know that great merit attaches to reciting the Qur’an, and an influence in illuminating the heart. The Messenger of God, may blessings and peace be upon him, has said: ‘The best of my nation’s devotions is the recitation of Qur’an.’ And `Ali, may God ennoble his face, has said: ‘The one who recites the Qur’an while standing in prayer recieves one hundred rewards for each letter; the one who recites it outside the prayer but in a state of ritual purity receives twenty-five rewards for each letter; and the one who recites it without ritual purity receives ten rewards for each letter.’
Beware of concentrating, while reciting, on a large amount to the exclusion of reflection and correct recitation. You must reflect and comprehend while you recite; slow, melodious recitation will assist you in this. Feel in your heart the Magnitude of the Speaker (Transcendent and Exalted is He!) and that you are before Him, reciting His Book to Him, in which He addresses His commands, prohibitions, counsels and exhortations to you. When reading verses on unification and glorification be full of reverence and awe, when reading verses of promises and threats be full of hopeful expectation and apprehension, and when reading the commands and prohibitions be thankful, acknowledge your shortcomings, ask for forgiveness and determine to show ardour. Know that the Qur’an is the ocean wherefrom the jewels of knowledge and treasures of understanding are extracted. Any believer who is granted the way to understand it, his opening [fath] becomes permanent, his light complete, his knowledge vast, and he never tires of reading it night and day, for he has found therein his goal and purpose. This is the quality of the sincere seeker. Shaykh Abu Madyan, may God be pleased with him, said: ‘A seeker is not a seeker until he is able to find in the Qur’an everything that he desires.’
Be careful to read those suras and verses which are recommended in the sunna at particular times; for example al-Sajda (The Prostration) [XXXII], al-Mulk (The Kingdom) [LXVII], al-Waqi`a (The Event) [LVI], and the last two verses of al-Baqara (The Heifer) [II] every night before going to sleep. Al-Dukhan (Smoke) [XLIV] on Sunday and Thursday evenings, and al-Kahf (The Cave) [XVIII] on Thursday night and Friday. Read, if you can, the Seven Sayings* every night, for their merits are great. Also morning and evening the first few verses of surat al-Hadid (Iron) [LVII], the last few verses of surat al-Hashr (The Mustering) [LIX], surat al-Ikhlas three times and the two refuge-taking suras together with the al-Kursi verse (The Footstool) [II:255[, and surat al-Kafirun (The Disbelievers) immediately before going to sleep, making these the last thing you utter.
And God says the truth, and He guides to the way.
(The Book of Assistance, Imam `Abdallah Ibn `Alawi al-Haddad)
* The Seven Saving Ones are the following seven suras: al-Sajda (The Prostration) , Ya-Sin, al-Dukhan (Smoke), al-Waqi`a (The Event), al-Hashr (The Gathering), al-Mulk (Sovereignty), and al-Insan (Man)