Sahih Bukhari
Good Manners and Form (Al-Adab)
Volume: 008 / Book Number: 073 / Hadith Number: 57
Narrated 'Abdullah bin Mulaika:
'Aisha said that the Jews came to the Prophet and said, "As-Samu 'Alaikum" (death be on you). 'Aisha said (to them), "(Death) be on you, and may Allah curse you and shower His wrath upon you!" The Prophet said, "Be calm, O 'Aisha ! You should be kind and lenient, and beware of harshness and Fuhsh (i.e. bad words)." She said (to the Prophet), "Haven't you heard what they (Jews) have said?" He said, "Haven't you heard what I have said (to them)? I said the same to them, and my invocation against them will be accepted while theirs against me will be rejected (by Allah). "