Yahya bin al-Harith al-Dhimari narrates that he met Sayyiduna Wathilah bin al-Asqa' (may Allah be pleased with him) and said: "Did you pledge allegiance to the Messenger of Allah (peace and blessings be upon him) with this very hand?" He said: "Yes." I said: "Give me your hand so that I may kiss it." He gave me his hand, and I kissed it.
Hadith Referenceالمعجم الكبير للطبراني / باب الواو / 18446