Ibn 'Umar reported that Hafsa, the Mother of the Believers, informed him that when the Mu'adhdhin became silent after calling (people) to the dawn prayer, the Messenger of Allah (ﷺ) commenced the dawn (prayer) when it dawned by observing two short rak'ahs before the commencement of the (Fard) prayer.
This hadith has been transmitted by Nafi' with the same chain of narrators.
Hafsa reported that when it was dawn, the Messenger of Allah (ﷺ) did not observe (any other prayers) but two short rak'ahs.
A hadith like this has been narrated by Shu'ba with the same chain of transmitters.
Hafsa reported
When the dawn appeared, the Messenger of Allah (ﷺ) observed two rak'ahs (of Sunnah prayers).
'A'isha reported
The Messenger of Allah (ﷺ) used to observe two rak'ahs of Sunnah (prayer) when he heard the Adhin and shortened them.
This hadith has been narrated by the same chain of transmitters and in the hadith narrated by Usama the words are
" When it was dawn".
'A'isha reported that the Messenger of Allah (ﷺ) used to observe two (supererogatory) rak'ahs in between the call to prayer and the Iqama of the dawn prayer.
'A'isha reported that the Messenger of Allah (ﷺ) observed two rak'ahs of the dawn prayer and he shortened them (to the extent) that I (out of surprise) said
Did he recite in them Surah Fatiha (only)?
'A'isha reported
When it was dawn, the Messenger of Allah (ﷺ) observed two rak'ahs, and I would say: Does he recite only the opening chapter of the Qur'an in it?
'A'isha reported that the Apostle (ﷺ) was not so much particular about observing supererogatory rak'ahs as in case of the two rak'ahs of the dawn prayer.
'A'isha reported
I have never seen the Messenger of Allah (ﷺ) hastening as much in observing supererogatory as two rak'ahs before the (Fard) of the dawn prayer.
'A'isha reported Allah's Messenger as saying
The two rak'ahs at dawn are better than this world and what it contains.
'A'isha reported that the Messenger of Allah (ﷺ) said about the two (supererogatory) rak'ahs of the dawn
They are dearer to me than the whole world.
Abu Huraira reported that the Messenger of Allah (ﷺ) recited in the two (supererogatory) rak'ahs of the dawn (prayer)
" Say: O unbelievers," (Qur'an, cix.) and" Say: Allah is one" (cxii.).
Ibn 'Abbas reported that the Messenger of Allah (ﷺ) used to recite in first of the two (supererogatory) rak'ahs of the dawn
"Say: We believed in Allah and what was revealed to us..." verse 136 from Surah Baqara, and in the second of the two: "I believe in Allah and I bear testimony that we are Muslims" (iii. 52).
Ibn 'Abbas reported that the Messenger of Allah (ﷺ) used to recite in the two (supererogatory) rak'ahs of the dawn prayer
" Say: We believed in Allah and what was revealed to us" and that which is found in Surah Al-i-'lmran:" Come to that word (creed) which is common between you and us" (iii. 64).
This hadith has been transmitted by another chain of narrators.