(55) باب تَفْضِيلِ الْحَلْقِ عَلَى التَّقْصِيرِ وَجَوَازِ التَّقْصِيرِ
Abdullah b. Umar (Allah be pleased with him) reported Allah's Messenger (ﷺ) as having observed:
O Allah, have mercy upon those who get their heads shaved. They (the Companions) said: Messenger of Allah, (what about those) who have got their hair clipped? He said: O Allah, have mercy upon those who have got their heads shaved. They (again) said: Allah's Messenger, (what about those) who have got their hair clipped? Thereupon he said: (O Allah, have mercy upon those) who have got their hair clipped.
Reference: Sahih Muslim 1301 b
In-book reference: Book 15, Hadith 349
USC-MSA web (English) reference(deprecated numbering scheme): Book 7, Hadith 2984