Sahih Muslim
The Book on Salutations and Greetings (Kitab As-Salam)
Book Number: 026 / Hadith Number: 5390
This hadith has been narrated on the authority of Suhail with the same chain of transmitters but with a slight variation of wording. The hadith transmitted on the authority of Waki', the words are 'When you meet the Jews." And in the hadith transmitted on the authority of Shu'ba, the words are: 'When you meet the People of the Book." And in the hadith transmitted on the authority of Jarir the words are:" When you meet them," but none amongst the polytheists has been mentioned explicitly by name.