I saw 'Umar (Allah'be pleased with him) kissing the Stone and saying: I am kissing you and I know that you are a stone. And if I had not seen Messenger of Allah ﷺ kissing you, I would not have kissed you.
رَأَيْتُ عُمَرَ يُقَبِّلُ الْحَجَرَ وَيَقُولُ إِنِّي لأُقَبِّلُكَ وَأَعْلَمُ أَنَّكَ حَجَرٌ وَلَوْلاَ أَنِّي رَأَيْتُ رَسُولَ اللَّهِ ﷺ يُقَبِّلُكَ لَمْ أُقَبِّلْكَ