TABARANI 10651:
from Aḥmad b. Muḥammad b. Yaḥyá b. Ḥamzah al-Dimashqī from my father from his father —
[Machine] The Mahdi prayed with us and recited "In the name of Allah, the Most Gracious, the Most Merciful" out loud. I asked him about that and he said, "My father told me, from his father, from his grandfather, from Ibn Abbas, that the Messenger of Allah ﷺ used to recite 'In the name of Allah, the Most Gracious, the Most Merciful' out loud."
الطبراني ١٠٦٥١:
عن احمد بن محمد بن يحيى بن حمزه الدمشقي عن أبي عن أبيه —
صَلَّى بِنَا الْمَهْدِيُّ فَجَهَرَ بِبِسْمِ اللهِ الرَّحْمَنِ الرَّحِيمِ فَقُلْتُ لَهُ فِي ذَلِكَ فَقَالَ حَدَّثَنِي أَبِي عَنْ أَبِيهِ عَنْ جَدِّهِ عَنِ ابْنِ عَبَّاسٍ أَنَّ رَسُولَ اللهِ ﷺ كَانَ يَجْهَرُ بِبِسْمِ اللهِ الرَّحْمَنِ الرَّحِيمِ
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