Salim narrated on the authority of his father (Allah be pleased with him) that 'Umar b. al-Khattib (Allah be pleased with him) kissed (the Black Stone) and then said
By Allah, I know that you are a stone and if I were not to see Allah's Messenger (ﷺ) kissing you, I would not have kissed you. Harun said in his narration: A hadith like this has been transmitted to me by Zaid b. Aslam on the authority of his father Aslam.
Ibn 'Umar (Allah be pleased with them) reported that Umar (Allah be pleased with him) kissed the Stone and said
I am kissing you, whereas I know that you are a stone, but I saw Allah's Messenger (ﷺ) kissing you (that Is why I kiss you).
Abdullah b. Sarjis reported
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 Allah's Messenger (ﷺ) kissing you. I would not have kissed you. The rest of the hadith is the same.
Abis b. Rabi'a reported
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 Allah's Messenger (ﷺ) kissing you, I would not have kissed you.
Suwaid b. Ghafala reported
I saw Umar (Allah be pleased with him) kissing the Stone and clinging to it and saying: I saw Allah's Messenger (ﷺ) having great love for you.
This hadith has been narrated on the authority of Sufyan with the same chain of transmitters (and the words are)
" That he ('Umar) said: But I saw Abu'l-Qasim (way peace be upon him) having great love for you." And he did not mention about clinging to it.