Jabir said, "Some of the Jews greeted the Prophet, may Allah bless
him and grant him peace, by saying, 'Poison be upon you (as-Samu 'alaykum)'
and the Prophet replied, 'And on you.' 'A'isha, may Allah be pleased with
her, said angrily, 'Didn't you hear what they said?' The Prophet replied,
'Yes, and I answered them. What I said about them will be accepted and
what they said about me will not be accepted.'"
'Uqba ibn 'Amir al-Juhani passed by a man who looked like a Muslim
who greeted him. 'Uqba answered him, saying, "And on you and the mercy
of Allah and his blessings." His slave said to him, "He is a Christian."
'Uqba got up and followed him until he caught up to him. He said, "The
mercy of Allah and His blessings are for the believers, but may Allah make
your life long and give you much wealth and many children."
'Abdullah ibn 'Abbas related that Abu Sufyan ibn Harb sent him
to Heraclius, the Byzantine Emperor, and he called for the letter of the
Messenger of Allah which Dihya had brought to the governor of Busra, who
in turn passed it on to Heraclius. He read it out, saying, 'In the name
of Allah, the Merciful, the Compassionate, from Muhammad, the slave of
Allah and His Messenger, to Heraclius, ruler of the Byzantines. Peace be
upon the one who follows guidance. I call you to Islam. If you become Muslim,
you will be safe and Allah will double your reward. If you turn away, then
you incur the wrong action of your subjects. "O People of the Book!
Come to a proposition which is the same for us and you (to His
words) Bear witness that we are Muslims."
(3:54)'"