Hafsa told me that the Prophet used to offer two Rakat after the call maker had made the Adhan and the day had dawned.

Narrated `Abdullah bin `Umar: Allah's Apostle used to pray two rak`at before the Zuhr prayer and two rak`at after it. He also used to pray two rak`at after the Maghrib prayer in his house, and two rak`at after the `Isha' prayer. He never prayed after Jumua prayer till he departed (from the Mosque), and then he would pray two rak`at at home.

Narrated `Aisha: The Prophet (ﷺ) was never more regular and particular in offering any Nawafil than the two rak`at (Sunna) of the Fajr prayer.

My sister Hafsa told me that the Prophet used to offer two light rak`at after dawn and it was the time when I never went to the Prophet."

Narrated Hafsa: When the Mu'adh-dhin pronounced the Adhan for Fajr prayer and the dawn became evident the Prophet ordered a two rak`at light prayer (Sunna) before the Iqama of the compulsory (congregational) prayer.