Riyad as-Saliheen 1038
Abu Sa'id Al-Khudri (May Allah be pleased with him) reported:
The Messenger of Allah ﷺ said, "When you hear the Mu'adhdhin (pronouncing the call to Salat), repeat after him what he says."
[Al-Bukhari and Muslim].
وعن أبي سعيد الخدري رضي الله عنه أن رسول الله ﷺ قال:
"إذا سمعتم النداء، فقولوا كما يقول المؤذن" ((متفق عليه)).
Classification
Sahih (Authentic)
References
Riyad as-Saliheen 1038
Riyad as-Saliheen Book of Virtues, Hadith 48