1605 - Narrated Zayd bin Aslam from his father that ‘Umar bin al-Khattaab (ra) stated concerning the Black Stone “By Allah, indeed, I know that you are only a stone which does not harm and benefit.  Had I not seen the Prophet ﷺtouching you, I would not have touched and kissed you.” Then, he touched and kissed it and said, “There is no need to walk with a high pace [in the first three rounds of Tawaaf], we did it because we wanted to display our strength to the polytheists, and now Allah has destroyed them.” Thereafter, he said, “Nonetheless, it is a thing that the Prophet ﷺdid, therefore, we do not like to forsake it.”
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Commentary : The Black Stone is an object of reverence which Allah, Exalted be He, brought down from Paradise.  The Prophet ﷺused to kiss it, hence, following his guidance we also kiss it, touch it, and point towards it although it is a stone that does not avert harm or bring forth benefit.
This hadeeth highlights the total submission of the Companions and the strength of their faith. The Taabi’ee. ‘Aabis bin Rabee’ah reports that ‘Umar bin al-Khattaab (ra) used to kiss the Black Stone, which is a rock set into the southeast corner of the Ka’bah, and it is embedded in a silver frame. He (ra) did so because he saw the Prophet ﷺkissing it and had he not seen him doing so, ‘Umar (may Allah be pleased with him) would not have kissed it, because he knew that it is just a rock that does not harm and benefit per se. The only benefit that one can obtain from kissing it is receiving reward through emulating the command of the Prophet ﷺand following the Sunnah of his kissing. It is said that ‘Umar (ra) only made that statement because people were very close in time to the worship of idols, thus, he feared that the ignorant ones may think that touching and kissing the Black Stone is the same as what the Arabs used to do before Islam. He intended to teach them that it is only the exaltation of Allah and adherence to the command of the Prophet intended by touching and kissing the Black Stone and that it is part of the rites of Hajj. That is because Allah has granted some stones virtues over the others, some pieces of land over the others, and some nights and days over the others. The kissing of the Black Stone has been prescribed as a form showing respect and veneration to its right and to observationally know who obeys the command and refrains from the prohibition. This is similar to the story of Satan when he was commanded to prostate to Adam (peace be upon him).
After, ‘Umar (ra) clarified that walking with a high pace in the first three rounds of Tawaaf was originally legislated due to the rumours the idolators had spread that the fever that hit al-Madeenah had weakened the Prophet ﷺand his Companions. It was only intended to display the strength of Muslims, so the disbelievers of Makkah know that we are strong enough to fight and resist them. It was a way to refute their false rumour. As for now, Allah has defeated disbelief and its people; and Makkah has been conquered, thus, the calling caused us to walk with a high pace in the first three rounds is no longer present, however, it has remained in practise as a legislated Sunnah; thus, we do it, as matter of following him and of acting upon his Sunnah.
Whatever ‘Umar (ra) stated here is his own speech with himself; in order to express the fact that the matter of religion is based on believing and following the Sunnah. His statement is not intended to criticise the acts of the rites. For this reason, he self-redressed and said, “It is a thing that the Messenger of Allah ﷺdid, and we do not love to abandon it, rather it is incumbent upon us to follow it.
From the benefits that we can conclude from this hadeeth is learning a great maxim about following the Prophet ﷺconcerning what he did even if the wisdom therein remains unknown. 
This hadeeth shows that it is permissible to kiss the Black Stone and indicates the fact that we should not kiss any other objects or stones without textual evidence from religion.
It also demonstrates the importance of clarifying the Sunnah through words and deeds, and that it is compulsory on the ruler to take the initiative to clarify that which he fears people may adopt a corrupt belief about.
From the other benefits we conclude is that Muslims should display their strength and power with arms and weaponry in order to instill awe and fear in the hearts of disbelievers, and that is not included in the unpraiseworthy showing off.
It proves that there are acts of worship that are purely ritualistic and there are those which are rationally understood..