Bismillah.
Volume 2, Book 26, Number 653:
Narrated 'Aisha (radiallaahu `anhaa):
(the wife of the Prophet) that Allah's Apostle (sallallaahu `alayhi wasallam) said to her, "Do you know that when your people (Quraish) rebuilt the Ka'ba, they decreased it from its original foundation laid by Abraham (`alayhissalaam)?" I said, "O Allah's Apostle (sallallaahu `alayhi wasallam)! Why don't you rebuild it on its original foundation laid by Abraham (`alayhissalaam)?" He replied, "Were it not for the fact that your people are close to the pre-lslamic Period of ignorance (i.e. they have recently become Muslims) I would have done so." The sub-narrator, 'Abdullah (bin 'Umar) (radiallaahu `anhu) stated: 'Aisha (radiallaahu `anhaa) 'must have heard this from Allah's Apostle (sallallaahu `alayhi wasallam) for in my opinion Allah's Apostle (sallallaahu `alayhi wasallam) had not placed his hand over the two corners of the Ka'ba opposite Al-Hijr only because the Ka'ba was not rebuilt on its original foundations laid by Abraham (`alayhissalaam).
Volume 2, Book 26, Number 654:
Narrated 'Aisha (radiallaahu `anhaa):
I asked the Prophet (sallallaahu `alayhi wasallam) whether the round wall (near Ka'ba) was part of the Ka'ba. The Prophet (sallallaahu `alayhi wasallam) replied in the affirmative. I further said, "What is wrong with them, why have they not included it in the building of the Ka'ba?" He said, "Don't you see that your people (Quraish) ran short of money (so they could not include it inside the building of Ka'ba)?" I asked, "What about its gate? Why is it so high?" He replied, "Your people did this so as to admit into it whomever they liked and prevent whomever they liked. Were your people not close to the Pre-lslamic Period of ignorance (i.e. they have recently embraced Islam) and were I not afraid that they would dislike it, surely I would have included the (area of the) wall inside the building of the Ka'ba and I would have lowered its gate to the level of the ground."
Volume 2, Book 26, Number 655:
Narrated 'Aisha (radiallaahu `anhaa):
Allah's Apostle (sallallaahu `alayhi wasallam) said to me, "Were your people not close to the Pre-lslamic period of ignorance, I would have demolished the Ka'ba and would have rebuilt it on its original foundations laid by Abraham (`alayhissalaam) (for Quraish had curtailed its building), and I would have built a back door (too)."
Volume 2, Book 26, Number 656:
Narrated Yazid bin Ruman from 'Urwa (radiallaahu `anhu):
'Aisha (radiallaahu `anhaa) said that the Prophet (sallallaahu `alayhi wasallam) said to her, "O Aisha (radiallaahu `anhaa)! Were your nation not close to the Pre-lslamic Period of Ignorance, I would have had the Ka'ba demolished and would have included in it the portion which had been left, and would have made it at a level with the ground and would have made two doors for it, one towards the east and the other towards the west, and then by doing this it would have been built on the foundations laid by Abraham (`alayhissalaam)." That was what urged Ibn-Az-Zubair to demolish the Ka'ba. Jazz said, "I saw Ibn-Az-Zubair when he demolished and rebuilt the Ka'ba and included in it a portion of Al-Hijr (the unroofed portion of Ka'ba which is at present in the form of a compound towards the north-west of the Ka'ba). I saw the original foundations of Abraham (`alayhissalaam) which were of stones resembling the humps of camels." So Jarir asked Yazid, "Where was the place of those stones?" Jazz said, "I will just now show it to you." So Jarir accompanied Yazid and entered Al-Hijr, and Jazz pointed to a place and said, "Here it is." Jarir said, "It appeared to me about six cubits from Al-Hijr or so."
Prophet (sallallaahu `alayhi wasallam)'s wisdom is unmatched! He avoided SUCH a big fitna by letting the Ka`bah be as it was. If only we were to deal with people and situations with enough wisdom. Most of the fasaad(s) are among the consequences of our own (non-wisdom-ful) actions.
May Allah give us hikmah (wisdom) and sabr (patience)!
Taken from: http://ilookilisten.wordpress.com/2013/02/06/the-original-kabah-ahadith-1353-1356/