Ahdullah b. Umar (reported) that he had not seen Messenger of Allah (way peace he upon him) touching anything in the House, except the two Yamani corners.  

لَمْ أَرَ رَسُولَ اللَّهِ ﷺ يَمْسَحُ مِنَ الْبَيْتِ إِلاَّ الرُّكْنَيْنِ الْيَمَانِيَيْنِ  

Salim reported on the authority of his father (Allah he pleased with him) that Allah'& Messenger (tinny peace be upon him) did not touch any of the corners of the House. except that of Black Corner (in which the Black Stone is embedded and that (portion) near it, towards the houses of the tribe of jumuhi.  

لَمْ يَكُنْ رَسُولُ اللَّهِ ﷺ يَسْتَلِمُ مِنْ أَرْكَانِ الْبَيْتِ إِلاَّ الرُّكْنَ الأَسْوَدَ وَالَّذِي يَلِيهِ مِنْ نَحْوِ دُورِ الْجُمَحِيِّينَ  

Nafi' reported on the authority of 'Abdullah (Allah be pleased with him) that Messenger of Allah (way peace be upon him) did not touch but the Stone and the Yamani corner.  

أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ لاَ يَسْتَلِمُ إِلاَّ الْحَجَرَ وَالرُّكْنَ الْيَمَانِيَ  

I have not abandoned touching of Yamani corners (and kissing of) the Stone since I saw Allah's messneger ﷺ touching them both In hardship and ease.  

مَا تَرَكْتُ اسْتِلاَمَ هَذَيْنِ الرُّكْنَيْنِ الْيَمَانِيَ وَالْحَجَرَ مُذْ رَأَيْتُ رَسُولَ اللَّهِ ﷺ يَسْتَلِمُهُمَا فِي شِدَّةٍ وَلاَ رَخَاءٍ  

I saw'lbn 'Umar (Allah be pleased with them) touching the Stone with his hand and then kissing his hand. and he said: I have never abandoned it since I saw Messenger of Allah (way peace be upon him) doing It.  

وَقَالَ مَا تَرَكْتُهُ مُنْذُ رَأَيْتُ رَسُولَ اللَّهِ ﷺ يَفْعَلُهُ  

Ibn 'Abbas (Allah be pleased with them) is reported to have said that he did not see Messenger of Allah ﷺ touching other than the Yamani corners.  

أَنَّهُ سَمِعَ ابْنَ عَبَّاسٍ يَقُولُ لَمْ أَرَ رَسُولَ اللَّهِ ﷺ يَسْتَلِمُ غَيْرَ الرُّكْنَيْنِ الْيَمَانِيَيْنِ