‏العلم : Hadeeth No:6444 Jundub b. 'Abdullah al-Bajali reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: Recite the Qur'an as long as your hearts agree to do so, and when you feel variance between them (between your hearts and tongues), then get up (and leave its recital for the time being)....

‏الفضائل : Hadeeth No:5696 Ibn 'Umar reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: There is before you a Cistern and the distance between its two sides is as it is between Jarba' and Adhruh....