I saw 'Umar look at the Black Stone and say: By Allah, were it not that I saw the Messenger of Allah ﷺ kiss you, I would not have kissed you. Then he kissed it.
أَمَا وَاللهِ لَوْلا أَنِّي رَأَيْتُ رَسُولَ اللهِ ﷺ يُقَبِّلُكَ مَا قَبَّلْتُكَ ثُمَّ قَبَّلَهُ
"I saw ʿUmar bin Al-Khattab kissing the Black Stone and he then said, (to it) 'Had I not seen Allah's Apostle kissing you, (stone) I would not have kissed you.' "
وَقَالَ لَوْلاَ أَنِّي رَأَيْتُ رَسُولَ اللَّهِ ﷺ قَبَّلَكَ مَا قَبَّلْتُكَ
"I saw Umar coming to the Stone and saying: 'I know that you are just a stone; had I not seen the Messenger of Allah kiss you I would not have kissed you.' Then he came close to it and kissed it." (Sahih) Chpater 148. How to Kiss It
إِنِّي لأَعْلَمُ أَنَّكَ حَجَرٌ وَلَوْلاَ أَنِّي رَأَيْتُ رَسُولَ اللَّهِ ﷺ يَقُبِّلُكَ مَا قَبَّلْتُكَ ثُمَّ دَنَا مِنْهُ فَقَبَّلَهُ
Yahya related to me from Malik from Hisham ibn Urwa from his father that Umar ibn al-Khattab said to the corner of the Black Stone while he was doing tawaf of the House, "You are only a stone, and if I had not seen the Messenger of Allah ﷺ kiss you, I would not do so." Then he kissed it. Malik said, "I have heard some of the people of knowledge recommending someone doing tawaf of the House to put his hand to his mouth when he takes it from the Yamani corner."
قَالَ وَهُوَ يَطُوفُ بِالْبَيْتِ لِلرُّكْنِ الأَسْوَدِ إِنَّمَا أَنْتَ حَجَرٌ وَلَوْلاَ أَنِّي رَأَيْتُ رَسُولَ اللَّهِ ﷺ قَبَّلَكَ مَا قَبَّلْتُكَ ثُمَّ قَبَّلَهُ
I saw ʿUmar go to the Black Stone and say: By Allah, I know that you are a stone and cannot cause harm or bring benefit. Were it not that I saw the Messenger of Allah ﷺ kiss you, I would not have kissed you. Then he leant down and kissed it.
أَمَا وَاللهِ إِنِّي لَأَعْلَمُ أَنَّكَ حَجَرٌ لَا تَضُرُّ وَلا تَنْفَعُ وَلَوْلا أَنِّي رَأَيْتُ رَسُولَ اللهِ ﷺ قَبَّلَكَ مَا قَبَّلْتُكَ ثُمَّ دَنَا فَقَبَّلَهُ
My father told me that ‘Umar bin al-Khattab ؓ said to the [Black] Stone; You are only a stone; were it not that I saw the Messenger of Allah ﷺ kiss you, I would not have kissed you. Then he kissed it.
لِلْحَجَرِ إِنَّمَا أَنْتَ حَجَرٌ وَلَوْلا أَنِّي رَأَيْتُ رَسُولَ اللهِ ﷺ يُقَبِّلُكَ مَا قَبَّلْتُكَ ثُمَّ قَبَّلَهُ
I know that you are only a stone and you cannot cause harm or bring benefit. Were it not that I saw the Messenger of Allah( ﷺ )kiss you, I would not have kissed you. Then he kissed it.
إِنِّي لَأَعْلَمُ أَنَّكَ حَجَرٌ لَا تَضُرُّ وَلا تَنْفَعُ وَلَوْلا أَنِّي رَأَيْتُ رَسُولَ اللهِ ﷺ يُقَبِّلُكَ مَا قَبَّلْتُكَ قَالَ ثُمَّ قَبَّلَهُ
I know that you are only a stone. Were it not that I saw the Messenger of Allah ﷺ kiss you, I would not have kissed you. (Using translation from Aḥmad 226)
«وَاللَّهِ لَقَدْ عَلِمْتُ أَنَّكَ حَجَرٌ وَلَوْلَا أَنِّي رَأَيْتُ رَسُولَ اللَّهِ ﷺ يُقَبِّلُكَ مَا قَبَّلْتُكَ»
"I saw Umar coming to the Stone and saying: 'I know that you are just a stone; had I not seen the Messenger of Allah kiss you I would not have kissed you.' Then he came close to it and kissed it." (Sahih) Chpater 148. How to Kiss It (Using translation from Nasāʾī 2937)
إِنِّي أَعْلَمُ أَنَّكَ حَجَرٌ «وَلَوْلَا أَنِّي رَأَيْتُ رَسُولَ اللهِ ﷺ يُقَبِّلُكَ مَا قَبَّلْتُكَ ثُمَّ دَنَا مِنْهُ فَقَبَّلَهُ»