Jābir (raḍiy Allāhu ‘anhū) relates that after Allah’s Messenger ﷺ would perform Fajr, he used to remain seated in his place of prayer until the sun had fully risen. (Muslim)
The Messenger of Allah ﷺ said: “In the morning, charity is due for every joint in the body of every one of you. Every tasbīh is an act of charity. Every tahmīd is an act of charity. Every tahlīl is an act of charity. Every takbīr is an act of charity. Enjoining good is an act of charity and forbidding evil is an act of charity. And the two rak‘ahs which one prays at the time of duhā will suffice (the above).” (Muslim)
The Messenger of Allah ﷺ said: “Allah, Blessed and Most High, said: ‘Son of Ādam, perform four rak‘ahs for Me in the beginning of the day; it will suffice you for the latter part of it.” (Tirmidhī)
Atā’ ibn al-Sā’ib (raḥimahullāh) narrates: “I entered upon Abū Abdul Rahman al-Sulamī (raḥimahullāh) who had performed Fajr and was seated in the Masjid. I said to him: ‘If you go and sit on your bed, it will be more comfortable.’ He replied: ‘I heard ‘Ali (raḍiy Allāhu ‘anhu) saying:
‘I heard the Messenger of Allah ﷺ saying: “Whoever performs Fajr and remains seated, the angels supplicate for him. And their supplication is: ‘O Allah, forgive him, O Allah, have mercy on him.’ And whoever waits for salāh, the angels supplicate for him. And their supplication is: ‘O Allah, forgive him, O Allah, have mercy on him.’” (Ahmad)
The Messenger of Allah ﷺ prayed the duhā prayer, and then said:
اَللّٰهُمَّ اغْفِرْ لِيْ وَتُبْ ﻋَﻠﻲَّ ، إِنَّكَ أنْتَ اﻟﺘَّوَّابُ اﻟرَّحِيْمُ
(O Allah, forgive me and pardon me. Indeed, You are the Acceptor of repentance and Ever Merciful),” until he repeated it a hundred times. (al-Adab al-Mufrad)
The Messenger of Allah ﷺ said: “Whoever offers Fajr in congregation and remains seated, engaging in the remembrance of Allah until the sun has risen, and then offers two rak‘ahs, he will have a reward equal to that of performing Hajj and ‘Umrah.” He ﷺ said: “Complete, complete, complete (i.e. complete reward).” (Tirmidhī)
— Ibn Hajar (raḥimahullāh) mentioned that if someone gets up and moves to another section of the masjid with the intention of waiting for salāh, his reward will be the same.
— The scholars have also stated that this reward is equally applicable to a woman who sits in the place where she performs Fajr and remembers Allah or recites the Qur’ān until sunrise.
— The prayer of duhā may be read 15 minutes after sunrise until 15 minutes before Dhuhr starts.
The Messenger of Allah ﷺ said: “None preserves the duhā prayer except for the awwāb (oft-repentant).” (Tabarānī)