question #3 Sahih Muslim 1268b, Book 15, Hadith 271 : Why is it important for Muslims to adhere to the practices observed by the Prophet Muhammad (peace be upon him)?

I saw’lbn ‘Umar (Allah be pleased with them) touching the Stone with his hand and then kissing his hand. and he said: I have never abandoned it since I saw Allah’s Messenger (way peace be upon him) doing It.