«اقرءوا القرآن ما ائتلفت عليه قلوبكم فإذا اختلفتم فيه فقوموا»
The Prophet (peace and blessings be upon him) said:
"Keep reciting the Qur'an as long as your hearts are attentive and united upon it; and when you begin to differ over it (its meanings or its recitation), then stand up (that is, stop the recitation)."
Hadith Referenceصحیح الجامع الصغیر / حرف الألف / 1166