Ibn Abbas said: To raise the voice for making the mention of Allah after the people had finished their obligatory prayer was for in vogue the time of the Messenger of Allah ﷺ. Ibn Abbas said: I used to know by it when they finished the prayer and would listen to it (making the mention of Allah).
Hadith Referenceسنن ابي داود / أبواب تفريع استفتاح الصلاة / 1003
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح بخاري (482) صحيح مسلم (583)
Hadith Takhrij« صحیح البخاری/الأذان 155 (841)، صحیح مسلم/المساجد 23 (583)، (تحفة الأشراف: 6513)، وقد أخرجہ: مسند احمد (1/367) (صحیح) »