Ayesha reported,

She used to say that the Messenger of Allah ﷺ would pray the two rakahs of Fajr so briefly that I would wonder whether he had even recited the Opening of the Quran in them.

Muslim 1684

Sahih

و حدثنا محمد بن المثنى حدثنا عبد الوهاب قال سمعت يحيى بن سعيد قال أخبرني محمد بن عبد الرحمن أنه سمع عمرة تحدث

عن عائشة

أنها كانت تقول كان رسول الله ﷺ يصلي ركعتي الفجر فيخفف حتى إني أقول هل قرأ فيهما بأم القرآن

مسلم 1684صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Muslim
Book
Travelers' prayer and its shortening
Chapter
Recommendation of the two Fajr sunnah rakahs, encouragement to perform them, making them light, being consistent with them, and what is recommended to recite in them
Numbering
Darussalam 1684
Muslim 1684