Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
hakim:1017 – Abū al-ʿAbbās Muḥammad b. Yaʿqūb > al-Rabīʿ b. Sulaymān > Asad b. Mūsá > al-Layth b. Saʿd > Yaḥyá b. Saʿīd from his father from his grandfather

[Machine] "He came while the Prophet ﷺ was praying the Fajr prayer, so he prayed with him. When the Prophet ﷺ finished, he stood up and prayed the two Rak'ahs of Fajr. The Prophet ﷺ asked him, 'What are these two Rak'ahs?' He replied, 'I did not pray them before the Fajr prayer.' Then he remained silent and did not say anything. Qais bin Fahd Al-Ansari, a companion, narrated this incident, and the chain of narration is authentic according to their conditions. And it has also been narrated by Muhammad bin Ibrahim at-Taymi from Qais bin Fahd, who is a companion and has a witness."  

الحاكم:١٠١٧ – حَدَّثَنَا أَبُو الْعَبَّاسِ مُحَمَّدُ بْنُ يَعْقُوبَ ثنا الرَّبِيعُ بْنُ سُلَيْمَانَ ثنا أَسَدُ بْنُ مُوسَى ثنا اللَّيْثُ بْنُ سَعْدٍ عَنْ يَحْيَى بْنِ سَعِيدٍ عَنْ أَبِيهِ عَنْ جَدِّهِ

أَنَّهُ جَاءَ وَالنَّبِيُّ ﷺ يُصَلِّي صَلَاةَ الْفَجْرِ فَصَلَّى مَعَهُ فَلَمَّا سَلَّمَ قَامَ فَصَلَّى رَكْعَتَيِ الْفَجْرِ فَقَالَ لَهُ النَّبِيُّ ﷺ «مَا هَاتَانِ الرَّكْعَتَانِ؟» فَقَالَ لَمْ أَكُنْ صَلَّيْتُهُمَا قَبْلَ الْفَجْرِ فَسَكَتَ وَلَمْ يَقُلْ شَيْئًا «قَيْسُ بْنُ فَهْدٍ الْأَنْصَارِيُّ صَحَابِيٌّ وَالطَّرِيقُ إِلَيْهِ صَحِيحٌ عَلَى شَرْطِهِمَا» وَقَدْ رَوَاهُ مُحَمَّدُ بْنُ إِبْرَاهِيمَ التَّيْمِيُّ عَنْ قَيْسِ بْنِ فَهْدٍقيس بن فهد صحابي وله شاهد  

See similar narrations below:

Collected by Bayhaqī
bayhaqi:4553 – Yaḥyá from his father from his grandfather

[Machine] He (the narrator) said, "I came and the Prophet ﷺ was praying the Fajr prayer, so I prayed with him. When he completed the prayer, he stood up and prayed two Rak'ahs of Fajr. The Prophet ﷺ then asked him, 'What were these two Rak'ahs?' He replied, 'I did not pray them before Fajr.' Then he remained quiet and did not say anything." Abu 'Abdullah Al-Hafiz reported it from Abu Al-'Abbas Muhammad bin Ya'qub, who narrated it from Ar-Rabi' bin Sulaiman, who narrated it from Asad bin Musa, who narrated it from Al-Laith bin Sa'd, who narrated it from Yahya bin Sa'id, who mentioned it.  

البيهقي:٤٥٥٣ – عَنْ يَحْيَى عَنْ أَبِيهِ عَنْ جَدِّهِ

أَنَّهُ جَاءَ وَالنَّبِيُّ ﷺ يُصَلِّي صَلَاةَ الْفَجْرِ فَصَلَّى مَعَهُ فَلَمَّا سَلَّمَ قَامَ فَصَلَّى رَكْعَتَيِ الْفَجْرِ فَقَالَ له النَّبِيُّ ﷺ مَا هَاتَانِ الرَّكْعَتَانِ؟ فَقَالَ لَمْ أَكُنْ صَلَّيْتُهُمَا قَبْلَ الْفَجْرِ فَسَكَتُ وَلَمْ يَقُلْ شَيْئًا أَنْبَأَهُ أَبُو عَبْدِ اللهِ الْحَافِظُ ثنا أَبُو الْعَبَّاسِ مُحَمَّدُ بْنُ يَعْقُوبَ ثنا الرَّبِيعُ بْنُ سُلَيْمَانَ ثنا أَسَدُ بْنُ مُوسَى ثنا اللَّيْثُ بْنُ سَعْدٍ عَنْ يَحْيَى بْنِ سَعِيدٍ فَذَكَرَهُ