‏العلم : Hadeeth No:6445 Jundub (i. e. Ibn 'Abdullah) reported that Allaah's Messenger (sallAllaahu alayhi wa sallam) said: Recite the Qur'an as long as your hearts agree to do so and when you find variance between them, then stand up....

‏الأيمان : Hadeeth No:4111 This hadith has been narrated through another chain of transmitters (and the words are):" He will be required to work (in order to secure freedom) for that por- tion in which he has not been emancipated, without overburdening him."...