Only those are believers, who believe in Allah and His Messenger (Muhammad): And when they are with him about a matter needing joint action, they do not leave until they ask for his permission; Verily, those who ask for your (Prophet's) consent are those who believe in Allah and His Messenger (Muhammad); So when they ask for your permission (to leave), for some matters of theirs, give the permission to those of them whom you will, and ask Allah for their forgiveness: Truly, Allah is Often Forgiving (Ghafoor), Most Merciful (Raheem).