If the intention and Talbiyah precede the wearing of the ihram...

If the intention and Talbiyah precede the wearing of the ihram, the pilgrim must repeat both, after wearing the ihram, as a matter of preferential precaution. Rule 3: If through ignorance or oversight, the ihram is worn over a shirt, the shirt must be removed immediately and the ihram is valid. Indeed, most evidently, the ihram is valid even, if the shirt was worn deliberately.

However, if it is put on after wearing the ihram there is no doubt that the ihram will be valid; however, the shirt must be removed from below. Rule 4: There is no objection to having more than the two pieces of cloth in ihram at the time of wearing it, or afterwards, for protection against heat or cold or…