Mu'awiyah bin Qurrah narrates: My father said to me: "When you pass by a gathering, greet the people of that gathering with salam. If they are engaged in good, you will become their partner, and if they are in some other state, you will receive your reward." I heard the Prophet (peace and blessings be upon him) say it like this.
Tabarani recorded it. Its chain contains a narrator whom I do not know.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الأدب / 12759
Hadith Gradingمحدثین:إسنادہ ضعیف
Hadith Takhrij«اخرجه الطبراني فى المعجم الكبير (28/19)»