Asking Permission
Ṣaḥīḥ al-Bukhārī 6257
إِذَا سَلَّمَ عَلَيْكُمُ الْيَهُودُ فَإِنَّمَا يَقُولُ أَحَدُهُمُ السَّامُ عَلَيْكَ. فَقُلْ وَعَلَيْكَ
idhā sallama ʿalaykumu al-yahūdu fa-innamā yaqūlu aḥaduhumu as-sāmu ʿalayka. faqul waʿalayka
Transliteration generated from the Arabic vowel marks
The full narration
Narrated `Abdullah bin `Umar:Allah's Messenger (ﷺ) said, "When the Jews greet you, they usually say, 'As-Samu 'alaikum (Death be on you),' so you should say (in reply to them), 'Wa'alaikum (And on you)
Source
Ṣaḥīḥ al-Bukhārī · 6257
Ṣaḥīḥ