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