It has been narrated that al-Zuhriy, once, asked Imam Ali ibn al-Husayn to name him the doer of the best of deeds.
According to another narration, Imam Zayn al- 'Abidin explained the 'leaving resident' by saying, "The leaving resident is he who finishes the Qur'an and, without separation, commences again. His like is a traveler who resides at a point and prepares for a new journey. When the people of Makkah accomplish the recitation of the Qur'an entirely, they without delay begin a new round of recitation by reciting the Surah of al-Fatihah and the first five verses of the Surah of al-Baqarah. They have called this method as 'the leaving resident' meaning to accomplish the Qur'an and begin a new round without break."
As has been previously cited, to memorize the Holy Qur'an stands for the observance of its instructions and indications and the commitment to its dos and don'ts.
Accordingly, we can conclude that a believer must at least recite the Holy Qur'an wholly three times a year. The verses of the Holy Qur'an are more than six thousands. Hence, apart from the recitation in the holy month of Ramadan, the Holy Qur'an should be recited entirely in one hundred and twenty days, which is four months.
 They are those who have investigated thoroughly the rules of the recitation of the Holy Qur'an while they have been inattentive to the meanings of what they are reciting.
 A1-1-hurr al-'Amiliy: Wasa'il al-Shi'ah 4:836.
 Al-Hurr al-'Amiliy: Wasa'il al-Shl'ah 4:840.
 Ibid (as quoted from Shaykh 'Abd al-Husayn al-Muzaffar: al-Shafi fi Sharh usul al-Kafi).
 Al-hurr al-'Amiliy: Wasa'il al-Shi'ah 4:852.
 Al-Hurr al-'Amiliy: Wasa'il al-Shisah 4:846.
 This is the first verse in the Surah of al-A'raf (the Heights; No. 7).
 Al-Hurr al-amiliy: Wasa'il al-Shi'ah 4:848.
 This statement is known as Istidhah and its form is 'A'udhu billahi minal-Shaytan al-Rajim (I seek Allah's protection against Satan the accursed)'.
 Al-Hurr al-amiliy: wasa'il al-Shi'ah 4:849.