Narrated `Abdullah bin `Umar: Allah's Apostle said,   O Allah! Be merciful to those who have their head shaved.   The people said,   O Allah's Apostle! And (invoke Allah for) those who get their hair cut short.   The Prophet said,   O Allah! Be merciful to those who have their head shaved.   The people said,   O Allah's Apostle! And those who get their hair cut short.   The Prophet said (the third time),   And to those who get their hair cut short.   Nafi` said that the Prophet had said once or twice,   O Allah! Be merciful to those who get their head shaved,   and on the fourth time he added,   And to those who have their hair cut short.