'Alqama said, "'Abdullah used to greet the Persian grandees with a gesture."  

عَنْ عَلْقَمَةَ قَالَ إِنَّمَا سَلَّمَ عَبْدُ اللهِ عَلَى الدَّهَاقِينَ إِشَارَةً  

Anas said, "A Jew passed by the Prophet, may Allah bless him and grant him peace, saying, 'Peace be upon you.' His Companions returned the salam.' The Prophet said, 'The Jew said, 'Poison (sam) be upon you.' He caught hold of the Jew who admitted it.' The Prophet said, 'Answer him with what he said.'"  

عَنْ أَنَسٍ قَالَ مَرَّ يَهُودِيٌّ عَلَى النَّبِيِّ ﷺ فَقَالَ السَّامُ عَلَيْكُمْ فَرَدَّ أَصْحَابُهُ السَّلاَمَ فَقَالَ قَالَ السَّامُ عَلَيْكُمْ فَأُخِذَ الْيَهُودِيُّ فَاعْتَرَفَ قَالَ رُدُّوا عَلَيْهِ مَا قَالَ