Chapter: It is permissible for the pilgrim performing Umrah to shorten his hair and he does not have to shave it. It is recommended for him to shave his hair or shorten it at Al-Marwah
Authentic
hadith of Sahih Muslim
Sahih Muslim 1248
‘Imrān ibn Husayn (may Allah be pleased with him) reported: The verse of Hajj Tamattu‘ was revealed in Allah's Book. We performed it with the Messenger (may Allah's peace and blessings be upon him) and nothing was revealed in Qur'an to make it unlawful, nor did the Prophet prohibit it till he died…
نَزَلَتْ آيَةُ الْمُتْعَةِ فِي كِتَابِ اللَّهِ - يَعْنِي مُتْعَةَ الْحَجِّ - وَأَمَرَنَا بِهَا رَسُولُ اللَّهِ صلى الله عليه وسلم ثُمَّ لَمْ تَنْزِلْ آيَةٌ تَنْسَخُ آيَةَ مُتْعَةِ الْحَجِّ وَلَمْ يَنْهَ عَنْهَا رَسُولُ…
تَمَتَّعَ رَسُولُ اللَّهِ صلى الله عليه وسلم فِي حَجَّةِ الْوَدَاعِ بِالْعُمْرَةِ إِلَى الْحَجِّ وَأَهْدَى فَسَاقَ مَعَهُ الْهَدْىَ مِنْ ذِي الْحُلَيْفَةِ وَبَدَأَ رَسُولُ اللَّهِ صلى الله عليه وسلم فَأَهَلَّ…