If one vows I'tikaf in Al-Masjid al-Haram, can they perform it elsewhere?

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If one vows I'tikaf in the Prophet's Mosque, one may perform it in Al-Masjid al-Haram because it is superior. However, one may not perform it in Al-Aqsa Mosque because the Prophet's Mosque is superior to it. Another view holds that the Prophet's Mosque is superior to Al-Masjid al-Haram because the Prophet (PBUH) was buried in the best of places, and Allah moved him there from Mecca, indicating its superiority. If one vows I'tikaf in Al-Aqsa Mosque, one may perform it in the other two mosques because they are superior to it. If one vows I'tikaf in a mosque other than these three and that mosque is destroyed, one must complete the I'tikaf elsewhere, and the I'tikaf is not invalidated.