Sahih al-Bukhari, Book 25, Hadith 97 (In-Book) ⓘ

Narrated Az-Zubair bin 'Arabi: A man asked Ibn `Umar about the touching of the Black Stone. Ibn `Umar said, "I saw Allah's Messenger touching and kissing it." The questioner said, "But if there were a throng (much rush) round the Ka`ba and the people overpowered me, (what would I do?)" He replied angrily, "Stay in Yemen (as that man was from Yemen). I saw Allah's Messenger touching and kissing it."

حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا حَمَّادٌ، عَنِ الزُّبَيْرِ بْنِ عَرَبِيٍّ، قَالَ سَأَلَ رَجُلٌ ابْنَ عُمَرَ ـ رضى الله عنهما ـ عَنِ اسْتِلاَمِ الْحَجَرِ،‏.‏ فَقَالَ رَأَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَسْتَلِمُهُ وَيُقَبِّلُهُ‏.‏ قَالَ قُلْتُ أَرَأَيْتَ إِنْ زُحِمْتُ أَرَأَيْتَ إِنْ غُلِبْتُ قَالَ اجْعَلْ أَرَأَيْتَ بِالْيَمَنِ، رَأَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَسْتَلِمُهُ وَيُقَبِّلُهُ‏.‏