Sayyiduna Ibn Abbas (may Allah be pleased with them both) says: I have preserved all the Sunnahs of the Prophet (peace be upon him), but I do not know whether the Prophet (peace be upon him) used to recite (aloud) in Zuhr and Asr or not. And I also do not know how the Prophet (peace be upon him) used to pronounce this word «وَقَدْبَلَغْتُمِنْالْكِبَرِعُتِيًّا» (with a dhamma on ‘Ain and with a ‘Ta’) «أَوْعُسُيًّا» (with a dhamma on ‘Ain and with a ‘Seen’)?
Hadith Referenceمسند احمد / ومن مسند بني هاشم / 2246