(22) باب كَيْفَ يُرَدُّ عَلَى أَهْلِ الذِّمَّةِ السَّلاَمُ
Narrated `Aisha:
A group of Jews came to Allah's Messenger (ﷺ) and said, "As-samu 'Alaika " (Death be on you), and I understood it and said to them, "Alaikum AsSamu wa-l-la'na (Death and curse be on you)." Allah's Apostle said, "Be calm! O `Aisha, for Allah loves that one should be kind and lenient in all matters." I said. "O Allah's Messenger (ﷺ)! Haven't you heard what they have said?" Allah's Messenger (ﷺ) said, "I have (already) said (to them), 'Alaikum (upon you).' "
Reference: Sahih al-Bukhari 6256
In-book reference: Book 79, Hadith 30
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 8, Book 74, Hadith 273