Clarification that the multiplied reward for prayer in Makkah is specific to the Mosque of the Ka'bah and not to any other mosque.

The Shaykh : For this reason, if a man prays in al-Masjid al-Haram, the mosque that contains the Ka'bah, his prayer is equivalent to one hundred thousand prayers. However, if he prays in the other mosques in Makkah, he does not obtain this virtue. But prayer in the mosques of Makkah is better than prayer in the mosques of al-Hal or in the mosques of other lands. This is because the Messenger of Allah (peace and blessings be upon him) explicitly stated, as narrated by Muslim in the hadith of Maymunah, the wife of the Prophet (peace and blessings be upon him), that he said: This is how it came in Sahih Muslim.
It is known that the mosques in Makkah are not the Mosque of the Ka'bah. The Mosque of the Ka'bah is a single mosque, which is the one that contains the Ka'bah. And because Allah the Exalted said in His Book: It is also known, as in Sahih al-Bukhari and others, that the Prophet (peace and blessings be upon him) was taken in the Night Journey from this mosque, from al-Hijr, which is the walled area to the north of the Ka'bah, and it is well known.