Hadith -- Bakr Eid

Narrated Abu Huraira (Radi-Allahu 'anhu):

Allah's Apostle (Sallallahu 'Alaihi Wa Sallam) said, "O Allah! Forgive
those who get their heads shaved." The people asked. "Also those who get
their hair cut short?" The Prophet (Sallallahu 'Alaihi Wa Sallam) said, "O
Allah! Forgive those who have their heads shaved." The people said, "Also
those who get their hair cut short?" The Prophet (Sallallahu 'Alaihi Wa
Sallam) (invoke Allah for those who have their heads shaved and) at the
third time said, "also (forgive) those who get their hair cut short."

Bukhari Vol. 2 : No. 786