Someone exited ihram of ‘umrah and shaved his head before doing sa‘i – what is the ruling?

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Check below answers in case you are looking for other related questions:
Ruling on putting a light cover over the niqab so that it no longer matches the description of the niqab that a woman is forbidden to wear whilst in ihram
Accepting perfume from another person so as not to offend him, when one is in ihraam

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Is it permissible to wrap a piece of cloth around the middle of the body in addition to the ihraam garments?
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Ruling on wearing ordinary clothing over the izaar and rida’ [ihram garments] before starting the rituals
Ruling on putting a light cover over the niqab so that it no longer matches the description of the niqab that a woman is forbidden to wear whilst in ihram
Accepting perfume from another person so as not to offend him, when one is in ihraam

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