Ruling on changing the intention of a person performing Ifrad to Tamattu' upon arriving in Makkah

Question:
If a person intends to perform Ifrad from Abi 'Abd, and upon arriving at the Haram he wants to consider himself as performing Tamattu', is that permissible?

Answer:
This is a good thing, that the person performing Ifrad changes from the intention of Ifrad to the intention of Tamattu'. When he arrives in Makkah, he performs Tawaf of the House for 'Umrah and walks between al-Safa and al-Marwah for the Sa'y of 'Umrah, then he shaves his head or shortens his hair, then he exits his state of Ihram. Then, when the time for Hajj comes, on the eighth day of Dhul-Hijjah, he enters the state of Ihram for Hajj. This is considered Tamattu'. This is what the Prophet (peace and blessings be upon him) guided his Companions to.
Those who did not bring sacrificial animals with the Prophet (peace and blessings be upon him), and who had entered the state of Ihram for Ifrad or Qiran, he (peace and blessings be upon him) ordered them to change their ritual to Tamattu' and to exit their state of Ihram after performing 'Umrah. He (peace and blessings be upon him) expressed a wish to do the same for himself, had he not brought sacrificial animals. He said: , or as the Prophet (peace and blessings be upon him) said. This is better: changing from Ifrad or Qiran to Tamattu'; because Tamattu' is the best of the rituals. Yes.