´It was narrated that Ibn Umar said:` "Since I saw the Messenger of Allah touch it, I did not fail to touching the Stone whether it was easy or difficult."
Hadith ReferenceSunan an-Nasa'i / The Book of Hajj / Hadith: 2956
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:إسناده صحيح