It is authentically reported in the Sunnah that the Qur’an will intercede for those who used to recite it. Imam Ahmad narrated on the authority of `Abdullah ibn `Amr that the Messenger of Allah (peace and blessings of Allah be upon him) said: “Fasting and the Qur’an will intercede for a person on the Day of Resurrection. Fasting will say, ‘O Lord, I deprived him of his food and his desires during the day, so let me intercede for him.’ And the Qur’an will say: ‘I deprived him of his sleep at night so let me intercede for him.’ Then they will intercede.”
Moreover, the Prophet maintained that the reward of reciting a letter from the Qur’an is doubled in tenfold. Thus, one should recite the Qur’an as much as one can.
Ibn Mas`ud said, “This Qur’an is a banquet from Allah, so take as much as you can of His banquet.
Dr. Rajab Abu Mileeh, stated,
“According to some scholars, neither wudu’ nor wearing Hijab is a condition for reciting the Qur’an from memory. A Muslim, whether in state of taharah or not, or even in a state of major impurity, according to some scholars, is allowed to recite the Qur’an from his memorization. However, it is recommended to do taharah for reciting the Qur’an but it is not a condition.
It is noteworthy to remind you that you have to avoid reciting the Qur’an in places that contain filths as well as in the bathroom as it is unallowable to recite the Qur’an in these places. Moreover, there is no harm on reciting the Qur’an while lying down. Allah commended those who remember him while standing, sitting or lying on their sides. He said, “Those who remember Allah standing and sitting and lying on their sides and reflect on the creation of the heavens and the earth.” Al-`Imarn 3:191″