Changing the Tamattu' Pilgrimage to Qiran

The questioner:
He says: Honorable Shaykh, may Allah grant you success. If I intend to perform Tamattu' at the Miqat, and then it occurs to me afterwards, or after some time has passed, to change it to Qiran, is my action correct?

The Shaykh:
It is forbidden for us. Yes.

The questioner:
And then it occurs to me afterwards, or after some time has passed, to change it to Qiran. Is my action correct?

The Shaykh:
Yes, it is correct. But the best is, if you have the means, to remain with Tamattu'. If time becomes tight for you, change it to Qiran, as A'ishah (may Allah be pleased with her) did. A'ishah entered the state of Ihram for Tamattu', and then she menstruated afterwards. When time became tight for her, the Prophet (peace and blessings be upon him) ordered her to enter the state of Ihram for Hajj and include it with her 'Umrah, so she became a Qarin. This is permissible. Yes.