صحيح مسلم
Sahih Muslim
كتاب صلاة المسافرين وقصرها
The Book of Prayer - Travellers
باب اسْتِحْبَابِ صَلاَةِ الضُّحَى وَأَنَّ أَقَلَّهَا رَكْعَتَانِ وَأَكْمَلَهَا ثَمَانِ رَكَعَاتٍ وَأَوْسَطَهَا أَرْبَعُ رَكَعَاتٍ أَوْ سِتٌّ وَالْحَثِّ عَلَى الْمُحَافَظَةِ عَلَيْهَا:
Chapter: It is recommended to pray Duha, the least of which is two rak`ah, the best of which is eight, and the average of which is four or six, and encouragement to do so regularly
Hadith 719
This hadith is listed as number 1663 in Maktaba Shamila
حَدَّثَنَا شَيْبَانُ بْنُ فَرُّوخَ ، حَدَّثَنَا عَبْدُ الْوَارِثِ ، حَدَّثَنَا يَزِيدُ يَعْنِي الرِّشْكَ ، حَدَّثَتْنِي مُعَاذَةُ ، أَنَّهَا سَأَلَتْ عَائِشَةَ رَضِيَ اللَّهُ عَنْهَا ، " كَمْ كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يُصَلِّي صَلَاةَ الضُّحَى ؟ قَالَتْ : أَرْبَعَ رَكَعَاتٍ ، وَيَزِيدُ مَا شَاءَ " .
Mu'adha asked 'A'isha (Allah be pleased with her) how many rak'ahs Allah's Messenger (ﷺ) prayed at the forenoon prayer. She replied: Four rak'ahs, but sometimes more as he pleased.
