Niyar bin Mukram reported,

When the verses "Alif Lam Mim. The Romans have been defeated in the nearest land, but after their defeat they will be victorious" [Rum 30:1–3] were revealed, down to the end of the two verses that follow, the Messenger of Allah ﷺ went out and began reciting, "In the name of Allah, the Most Gracious, the Most Merciful. Alif Lam Mim. The Romans have been defeated in the nearest land, but after their defeat they will be victorious."The chiefs of the idolaters of Makkah said, "Son of Abu Quhafa, is this something your companion has brought?"Abu Bakr replied, "No, by Allah, it is the speech of Allah and His word."

Azami 414

Hasan

عن نيار بن مكرم الأسلمي صاحب رسول الله ﷺ قال

لما نزلت {الم غلبت الروم في أدنى الأرض وهم من بعد غلبهم سيغلبون} [سورة الروم: ١- ٣] إلى آخر الآيتين خرج رسول الله ﷺ فجعل يقرأ: {بسم الله الرحمن الرحيم الم غلبت الروم في أدنى الأرض وهم من بعد غلبهم سيغلبون} فقال رؤساء مشركي مكة: يا ابن أبي قحافة، هذا مما أتى به صاحبك؟ قال: لا والله، ولكنه كلام الله وقوله.

الأعظمي 414حسن
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Faith
Chapter
Faith in Allah عز وجل
Section
Quran being the speech of Allah
Numbering
Jami al-Kamil 414 (2nd edition)
Azami 414