(127) باب الْحَلْقِ وَالتَّقْصِيرِ عِنْدَ الإِحْلاَلِ
Narrated Abu Huraira:
Allah's Messenger (ﷺ) said, "O Allah! Forgive those who get their heads shaved." The people asked. "Also those who get their hair cut short?" The Prophet (ﷺ) said, "O Allah! Forgive those who have their heads shaved." The people said, "Also those who get their hair cut short?" The Prophet (invoke Allah for those who have their heads shaved and) at the third time said, "also (forgive) those who get their hair cut short."
Reference: Sahih al-Bukhari 1728
In-book reference: Book 25, Hadith 206
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 2, Book 26, Hadith 786