Narrated Ibn `Abbas
The Prophet (ﷺ) was asked about a person who had his head shaved before slaughtering (his Hadi) (or other similar ceremonies of Hajj). He replied, "There is no harm, there is no harm."
Narrated Ibn `Abbas
A man said to the Prophet (ﷺ) "I performed the Tawaf-al-Ifada before the Rami (throwing pebbles at the Jamra)." The Prophet (ﷺ) replied, "There is no harm." The man said, "I had my head shaved before slaughtering." The Prophet (ﷺ) replied, "There is no harm." He said, "I have slaughtered the Hadi before the Rami." The Prophet (ﷺ) replied, "There is no harm."
Narrated Ibn `Abbas
The Prophet (ﷺ) was asked by a man who said, "I have done the Rami in the evening." The Prophet (ﷺ) replied, "There is no harm in it." Another man asked, "I had my head shaved before the slaughtering." The Prophet (ﷺ) replied, "There is no harm in it."
Narrated Abu Musa
I came upon Allah's Messenger (ﷺ) when he was at Al-Batha. He asked me, "Have you intended to perform the Hajj?" I replied in the affirmative. He asked, "For what have you assumed lhram?" I replied," I have assumed Ihram with the same intention as that of the Prophet (ﷺ)." The Prophet (ﷺ) said, "You have done well! Go and perform Tawaf round the Ka`ba and between Safa and Marwa." Then I went to one of the women of Bani Qais and she took out lice from my head. Later, I assumed the Ihram for Hajj. So, I used to give this verdict to the people till the caliphate of `Umar. When I told him about it, he said, "If we take (follow) the Holy Book, then it orders us to complete Hajj and `Umra (Hajj-at- Tamattu`) and if we follow the tradition of Allah's Messenger (ﷺ) then Allah's Messenger (ﷺ) did not finish his lhram till the Hadi had reached its destination (had been slaughtered). (i.e. Hajj-al-Qiran). (See Hadith No. 630)