Sayyiduna Jabir (may Allah be pleased with him) says: If I go to some people who are praying, I will not greet them with salam.
Abu Ya'la recorded it, and its narrators are the narrators of the Sahih.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الأدب / 12777