Sayyiduna Wahshi bin Harb (may Allah be pleased with him) said: When I came to the Messenger of Allah (peace and blessings be upon him) after killing Sayyiduna Hamzah (may Allah be pleased with him), he (peace and blessings be upon him) spat in my face three times, then said: "Do not show me your face again."
Hadith Referenceالمعجم الكبير للطبراني / باب الواو / 18589