Yahya related to me from Malik from Hisham ibn Urwa that his father said that the Messenger of Allah ﷺ once said to Abd ar-Rahman ibn Awf, "What do you do, Abu Muhammad, when saluting the corner?" and Abd ar-Rahman said, "Sometimes I salute it, and sometimes I don't." The Messenger of Allah ﷺ said, "You are right."
أَنَّهُ قَالَ قَالَ رَسُولُ اللَّهِ ﷺ لِعَبْدِ الرَّحْمَنِ بْنِ عَوْفٍ كَيْفَ صَنَعْتَ يَا أَبَا مُحَمَّدٍ فِي اسْتِلاَمِ الرُّكْنِ فَقَالَ عَبْدُ الرَّحْمَنِ اسْتَلَمْتُ وَتَرَكْتُ فَقَالَ لَهُ رَسُولُ اللَّهِ ﷺ أَصَبْتَ