Hazrat Abu Hurairah R.A. reports that Rasulullah Sal’am said: ‘Seventy angels are placed over the Ruknul Yamaani. When anyone says: ‘O Allah, grant me pardon and safety from danger and sin in this world and in the hereafter; Our Lord grant us the righteous of this world and of the hereafter, and save us from the punishment of hell”, then they say: ‘Aameen’. The Ruknul Yamaani is also a very blessed corners of the Ka’ba. The Ruknul Yamaani is also a very blessed place.
Hazrat Umar R.A. says: “We did not stop touching the Hajar-al-Aswad and the Ruknul Yamaani at any time from the time we saw Rasulullah Sal’am touching them”. Kissing Rukn, only means passing the hand over it as one passes there during tawaaf. According to a hadith in Kanz, touching the Hajar and the Rukn causes sins to be pardoned. In another hadith it is related that Rasulullah Sal’am kissed the Ruknul Yamaani. Let me warn here that touching these two parts of the Ka’ba, should take place in such a manner that others are not harmed. One should watch out for this. It is Mustahab to touch these parts, and it is haraam to cause harm or hurt a Muslim.