Yonus bin 'Abdul A'la al-Sadfi يونس بن عبد الأعلى بن ميسرة الصدفي · Chapters on Hajj Rituals

“Jibril came to me and said: ‘O Muhammad! Tell your Companions to raise their voices when reciting the Talbiyah, for it is one of the symbols of Hajj.’”