رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 167
The Book of Miscellany
Observing the Sunnah and the manners of its obedience
وَعَنْ عَابِسِ بْنِ رَبِيعَةَ قَالَ: رَأَيْت عمر بْنَ الْخَطَّابِ ، رَضِيَ اللَّهُ عَنْهُ ، يقبل الحجر -يعنى الأسود- ويقول:إِنِّي أَعْلَمُ أَنَّكَ حَجَرٌ مَا تَنْفَعُ وَلَا تَضُرُّ، وَلَوْلَا أَنِّي رَأَيْتُ رَسُولَ اللَّهِ، صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ، يُقَبِّلُكَ مَا قَبَّلْتُكَ. ((مُتَّفَقٌ عَلَيْهِ)) .
'Abis bin Rabi'ah (May Allah be pleased with him) reported: I saw 'Umar bin Al-Khattab (May Allah be pleased with him) kissing the Black Stone (Al-Hajar Al-Aswad) and saying: "I know that you are just a stone and that you can neither do any harm nor give benefit. Had I not seen Messenger of Allah (ﷺ) kissing you, I would not have kissed you". [Al-Bukhari and Muslim].
Riyad as-Salihin, 167