Yahya related to me from Malik from Ata ibn Abi Muslim thatAbdullah al-Khurasani said, "The Messenger of Allah, may Allah blesshim and grant him peace, said, 'Shake hands and rancour willdisappear. Give presents to each other and love each other and enmitywill disappear.' "
USC-MSA web (English) reference: Book 47, Hadith 16
Arabic reference: Book 47, Hadith 1651