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Yahya related to me from Malik from Abdullah ibn Dinar that Abdullah ibn Umar said that the Messenger of Allah, may Allah bless him and grant him peace, said, "When a jew greets you, and says 'Death to you' (as-samu alaykum) say, 'And to you.' " Yahya said, "Malik was asked whether a person who greeted a jew or christian, should apologise for it. He said, 'No'."