Allah says in the Quran (meaning): “And (as for the believers) hath attuned their hearts. If thou hadst spent all that is in the earth thou couldst not have attuned their hearts, but Allah hath attuned them. Lo! He is Mighty, Wise. (8:63)”
If you had to spend all of what’s on this planet to get this kind of gathering in any time, at any other location, in this uniform, you won’t be able to… no body would… and no body has been able to… nobody will ever be able to…