The Holy Prophet said...
The Holy Prophet said: “Whenever I come to at this point I find that Jibra'il is already there before me. “ Imam Ja'far (as) said: “The Rukn al‑Aimana is our gate to paradise. “ He also said: “In this place, is one of the doors of paradise that has never been closed since it was opened. There is a river from paradise in which deeds of the servants are dropped.
“ He continued by saying: “There is an angel who has been stationed at this point since the creation of the heavens and the earth whose duty is nothing other than to take care of your supplications. As such one must be careful with what he is saying. One should make use of his presence at this holy place as Possible and should not waste time doing things that are of less importance.” Al‑Rukn al‑Iraf This corner is named as such since it faces towards Iraq ‑ south east.
Al‑Rukn al‑Shamh It is recommended to touch all the corners according to the narration from Jamil bin Salih that he saw Imam Sadiq (as) touching them all. All the same, it is stressed to touch Rukn al‑Aimani and the corner where the Black Stone rests. It is understood from traditions that the Holy Prophet; used to touch them all.
Of course, all this depends on the fact that you don't disturb other people around you otherwise the recommended act loses authenticity and if anything it could even be haram (forbidden). The Rukn al‑Sharqi (Eastern Corner) is where the Black stone rests while Rukn ash‑Shimali (Northern Corner) is the one which comes after the Holy Ka'bah's door before reaching Hijr Isma'il. It is well known as Rukn al‑Iraqi (it is also called Rukn ash‑Shami).
Rukn al‑Gharbi (Western Corner) is the one that comes after Hijr Isma'il (also called Rukn ash‑Shami). Rukn al‑Junubi (Southern Corner) is the one that comes before the Black Stone corner (also known as Rukn al‑Aimani). Previous…