Hadith on Hajj: Recommendation to shave head, permission to cut only

Abdullah ibn Umar reported: At the end of the Hajj pilgrimage, the Messenger of Allah, peace and blessings be upon him, said, “O Allah, have mercy upon those who shaved their heads.” They said, “And those who cut their hair short, O Messenger of Allah.” The Prophet said, “O Allah, have mercy upon those who shaved their heads.” They said, “And those who cut their hair short, O Messenger of Allah.” The Prophet said, “And those who cut their hair short.”

Source: Ṣaḥīḥ al-Bukhārī 1640, Ṣaḥīḥ Muslim 1301

Grade: Muttafaqun Alayhi (authenticity agreed upon) according to Al-Bukhari and Muslim

عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ رَضِيَ اللَّهُ عَنْهُمَا أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ اللَّهُمَّ ارْحَمْ الْمُحَلِّقِينَ قَالُوا وَالْمُقَصِّرِينَ يَا رَسُولَ اللَّهِ قَالَ اللَّهُمَّ ارْحَمْ الْمُحَلِّقِينَ قَالُوا وَالْمُقَصِّرِينَ يَا رَسُولَ اللَّهِ قَالَ وَالْمُقَصِّرِينَ

1640 صحيح البخاري كتاب الحج باب الحلق والتقصير عند الإحلال

1301 صحيح مسلم كتاب الحج باب تفضيل الحلق على التقصير وجواز التقصير