Full Sharh — Musnad Ahmad 222
حَدَّثَنَا أَبُو مُعَاوِيَةَ، حَدَّثَنَا عَاصِمٌ الْأَحْوَلُ، عَنْ عَبْدِ اللَّهِ بْنِ سَرْجِسَ، قَالَ رَأَيْتُ الْأُصَيْلِعَ يَعْنِي عُمَرَ رَضِيَ اللَّهُ عَنْهُ يُقَبِّلُ الْحَجَرَ وَيَقُولُ إِنِّي لَأُقَبِّلُكَ وَأَعْلَمُ أَنَّكَ حَجَرٌ لَا تَنْفَعُ وَلَا تَضُرُّ وَلَوْلَا أَنِّي رَأَيْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يُقَبِّلُكَ لَمْ أُقَبِّلْكَ.
English Translation
It was narrated that 'Abdullah bin Sarjis said:: I saw the bald one, meaning 'Umar (رضي الله عنه), 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 رضي الله عنه kiss you, I would not have kissed you,
Source
Musnad Ahmad(مسند أحمد)
Musnad `Umar b. al-Khattab (ra)
Hadith Number
222