Al-Fath 48:27

Indeed, Allah has fulfilled His Messenger’s dream in truth: that you will surely enter the Sacred Mosque if Allah wills, in peace and safety, and you will have your heads shaved or shortened[18], without any fear. He knew what you did not know, and He granted you prior to that an imminent conquest[19].

[18] Shaving or trimming hair is from the requirements upon completing the rites of pilgrimage.
[19] Referring to the Treaty of Hudaybiyyah and subsequently the conquest of Khaybar prior to the fulfillment of the Prophet’s dream regarding entering Makkah for pilgrimage.

Certainly has Allāh showed to His Messenger the vision [i.e., dream] in truth. You will surely enter al-Masjid al-Ḥarām, if Allāh wills, in safety, with your heads shaved and [hair] shortened,[1517] not fearing [anyone]. He knew what you did not know and has arranged before that a conquest near [at hand].

[1517] i.e., having completed the rites of ʿumrah.

27. Indeed Allâh shall fulfil the true vision which He showed to His Messenger (صلى الله عليه وسلم) [i.e. the Prophet صلى الله عليه وسلم saw a dream that he has entered Makkah along with his Companions, having their (head) hair shaved and cut short] in very truth. Certainly, you shall enter Al-Masjid-al-Harâm, if Allâh wills, secure, (some) having your heads shaved, and (some) having your head hair cut short, having no fear. He knew what you knew not, and He granted besides that a near victory.

Allah hath fulfilled the vision for His messenger in very truth. Ye shall indeed enter the Inviolable Place of Worship, if Allah will, secure, (having your hair) shaven and cut, not fearing. But He knoweth that which ye know not, and hath given you a near victory beforehand.