Suwaid bin Ghaflah (may Allah have mercy on him) says that I saw once that Sayyiduna Umar (may Allah be pleased with him) embraced the Black Stone and kissed it, and addressing it, said: "I have seen Abu al-Qasim (peace and blessings be upon him) showing kindness to you."
Hadith Referenceمسند احمد / مسند الخلفاء الراشدين / 382
Hadith Gradingحکم دارالسلام:إسناده صحيح، وأنظر ما قبله