"I said to Ibn Umar: 'I see that you only touch these two Yemeni corners.' He said: 'I only saw the Messenger of Allah touch these two corners.'" This is an abridgement of it. (Using translation from Nasāʾī 2950)  

قُلْتُ لِابْنِ عُمَرَ رَأَيْتُكَ لَا تَسْتَلِمُ مِنَ الْأَرْكَانِ إِلَّا هَذَيْنِ الرُّكْنَيْنِ قَالَ «لَمْ أَرَ رَسُولَ اللهِ ﷺ يَسْتَلِمُ إِلَّا هَذَيْنِ الرُّكْنَيْنِ» مُخْتَصَرٌ  

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. (Using translation from Muslim 1267c)  

أَنَّ رَسُولَ اللهِ ﷺ كَانَ «لَا يَسْتَلِمُ إِلَّا الْحَجَرَ وَالرُّكْنَ الْيَمَانِيَّ»  

“The Messenger of Allah ﷺ did not touch the corners of the Ka’bah apart from the Black Corner (i.e., the corner where the Black Stone is) and the one that is next to it facing the houses of Banu Jumah (i.e., the Yemenite Corner).” (Using translation from Ibn Mājah 2946)  

«لَمْ يَكُنْ رَسُولُ اللهِ ﷺ يَسْتَلِمُ مِنْ أَرْكَانِ الْبَيْتِ إِلَّا الرُّكْنَ الْأَسْوَدَ وَالَّذِي يَلِيهِ مِنْ نَحْوِ دُورِ الْجُمَحِيِّينَ»