ʿUmar came near the Black Stone and kissed it and said "No doubt, I know that you are a stone and can neither benefit anyone nor harm anyone. Had I not seen Messenger of Allah ﷺ kissing you I would not have kissed you."  

إِنِّي أَعْلَمُ أَنَّكَ حَجَرٌ لاَ تَضُرُّ وَلاَ تَنْفَعُ وَلَوْلاَ أَنِّي رَأَيْتُ النَّبِيَّ ﷺ يُقَبِّلُكَ مَا قَبَّلْتُكَ  

I saw the bald one, i. e. 'Umar b. Khattib (Allah be pleased with him). kissing the Stone and saying: By Allah. I am kissing with full consciousness of the fact that you are a stone and that you can neither do any harm nor good; and if I had not seen Messenger of Allah ﷺ kissing you. I would not have kissed you. The rest of the hadith is the same.  

رَأَيْتُ الأَصْلَعَ يَعْنِي عُمَرَ بْنَ الْخَطَّابِ يُقَبِّلُ الْحَجَرَ وَيَقُولُ وَاللَّهِ إِنِّي لأُقَبِّلُكَ وَإِنِّي أَعْلَمُ أَنَّكَ حَجَرٌ وَأَنَّكَ لاَ تَضُرُّ وَلاَ تَنْفَعُ وَلَوْلاَ أَنِّي رَأَيْتُ رَسُولَ اللَّهِ ﷺ قَبَّلَكَ مَا قَبَّلْتُكَ وَفِي رِوَايَةِ الْمُقَدَّمِيِّ وَأَبِي كَامِلٍ رَأَيْتُ الأُصَيْلِعَ  

"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  

Abis bin Rabi’ah said on the authority of ‘Umar He(‘Umar) came to the (Black) Stone and said “ I know for sure that you are a stone which can neither benefit nor injure and had I not seen the Apostle of Allaah ﷺ kissing you, I would not have kissed you.”  

إِنِّي أَعْلَمُ أَنَّكَ حَجَرٌ لاَ تَنْفَعُ وَلاَ تَضُرُّ وَلَوْلاَ أَنِّي رَأَيْتُ رَسُولَ اللَّهِ ﷺ يُقَبِّلُكَ مَا قَبَّلْتُكَ  

“I saw the bald forehead of ‘Umar bin Khattab when he kissed the Black Stone and said: ‘I am kissing you, although I know that you are only a stone and you can neither cause harm nor bring benefit. Had I not seen the Messenger of Allah ﷺ kissing you, I would not have kissed you.’”  

رَأَيْتُ الأُصَيْلِعَ عُمَرَ بْنَ الْخَطَّابِ يُقَبِّلُ الْحَجَرَ وَيَقُولُ إِنِّي لأُقَبِّلُكَ وَإِنِّي لأَعْلَمُ أَنَّكَ حَجَرٌ لاَ تَضُرُّ وَلاَ تَنْفَعُ وَلَوْلاَ أَنِّي رَأَيْتُ رَسُولَ اللَّهِ ﷺ يُقَبِّلُكَ مَا قَبَّلْتُكَ  

I saw ʿUmar kiss the Black Stone and say: I know that you are a stone and cannot cause harm or bring benefit, but I saw Abul-Qasim ﷺ show respect to you.  

عَنْ سُوَيْدِ بْنِ غَفَلَةَ قَالَرَأَيْتُ عُمَرَ يُقَبِّلُ الْحَجَرَ وَيَقُولُ إِنِّي لَأَعْلَمُ أَنَّكَ حَجَرٌ لَا تَضُرُّ وَلا تَنْفَعُ وَلَكِنِّي رَأَيْتُ أَبَا الْقَاسِمِ ﷺ بِكَ حَفِيًّا  

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  

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 saw 'Umar kissing the Black Stone and saying; I am kissing you and I know that you are just a stone; if I had not seen the Messenger of Allah ﷺ kissing you, I would not have kissed you.  

عَنْ عَابِسِ بْنِ رَبِيعَةَ قَالَرَأَيْتُ عُمَرَ يُقَبِّلُ الْحَجَرَ وَيَقُولُ إِنِّي لَأُقَبِّلُكَ وَأَعْلَمُ أَنَّكَ حَجَرٌ وَلَوْلا أَنِّي رَأَيْتُ رَسُولَ اللهِ ﷺ يُقَبِّلُكَ لَمْ أُقَبِّلْكَ  

I saw the bald one, meaning 'Umar ؓ , kiss the [Black) Stone and say: I am kissing you and I know that you are only a stone and cannot bring any benefit or ward off any harm, were it not that I saw the Messenger of Allah ؓ kiss you, I would not have kissed you,  

عَنْ عَبْدِ اللهِ بْنِ سَرْجِسَ قَالَرَأَيْتُ الْأُصَيْلِعَ يَعْنِي عُمَرَ يُقَبِّلُ الْحَجَرَ وَيَقُولُ إِنِّي لَأُقَبِّلُكَ وَأَعْلَمُ أَنَّكَ حَجَرٌ لَا تَنْفَعُ وَلا تَضُرُّ وَلَوْلا أَنِّي رَأَيْتُ رَسُولَ اللهِ ﷺ يُقَبِّلُكَ لَمْ أُقَبِّلْكَ  

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)   

وَقَالَ «إِنِّي لَأَعْلَمُ أَنَّكَ حَجَرٌ مَا تَنْفَعُ وَمَا تَضُرُّ وَلَوْلَا أَنِّي رَأَيْتُ رَسُولَ اللَّهِ ﷺ يُقَبِّلُكَ مَا قَبَّلْتُكَ»  

Abis bin Rabi’ah said on the authority of ‘Umar He(‘Umar) came to the (Black) Stone and said “ I know for sure that you are a stone which can neither benefit nor injure and had I not seen the Apostle of Allaah ﷺ kissing you, I would not have kissed you.” (Using translation from Abū Dāʾūd 1873)  

أَعْلَمُ أَنَّكَ حَجَرٌ لَا تَضُرُّ وَلَا تَنْفَعُ «وَلَوْلَا أَنِّي رَأَيْتُ رَسُولَ اللهِ 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 (Using translation from Nasāʾī 2937)  

إِنِّي أَعْلَمُ أَنَّكَ حَجَرٌ «وَلَوْلَا أَنِّي رَأَيْتُ رَسُولَ اللهِ ﷺ يُقَبِّلُكَ مَا قَبَّلْتُكَ ثُمَّ دَنَا مِنْهُ فَقَبَّلَهُ»  

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. (Using translation from Aḥmad 381)   

إِنَّكَ حَجَرٌ لَا تَنْفَعُ وَلَا تَضُرُّ «وَلَوْلَا أَنِّي رَأَيْتُ رَسُولَ اللهِ ﷺ قَبَّلَكَ مَا قَبَّلْتُكَ» ثُمَّ قَالَ عُمَرُ رَأَيْتُ رَسُولَ اللهِ ﷺ فَعَلَ مِثْلَ ذَلِكَ  

"عَنْ عَبْدِ اللهِ بْنِ سَرْجسَ قَالَ: رَأَيْتُ عُمَرَ بْنَ الْخَطَّابِ قَبَّلَ الْحَجَرَ الأَسْوَدَ وَقَالَ: إِنِّي لأُقَبِّلُكَ وَأَعْلمُ أَنَّكَ حَجَرٌ لَا تَضُرُّ وَلَا تَنْفَعُ، وَلَوْلَا أَنِّى رَأَيْتُ رَسُولَ اللهِ ﷺ يُقَبِّلُكَ مَا قَبَّلْتُكَ".