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
suyuti:24722a –
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السيوطي:٢٤٧٢٢a –

"لا تَدَعُوا الرَّكْعَتَينِ اللتَينِ قَبْلَ صَلاةِ الْفَجْرِ، فَإِنَّ فِيهِمَا الرَّغَائِبَ".  

ابن زنجويه، [طب] الطبرانى في الكبير والمحاملى، والخطيب عن ابن عمر

See similar narrations below:

Collected by Ṭabarānī, Suyūṭī
tabarani:13502 – Lā Tadaʿūā al-Rakʿatayn al-Latayn Qabl Ṣalāh al-Fajr

[Machine] And I heard him saying, "Do not neglect the two Rak'ahs before the Fajr prayer, for they contain great benefits."  

الطبراني:١٣٥٠٢ – undefined

وَسَمِعْتُهُ يَقُولُ «لَا تَدَعُوا الرَّكْعَتَيْنِ اللَّتَيْنِ قَبْلَ صَلَاةِ الْفَجْرِ فَإِنَّ فِيهِمَا الرَّغَائِبَ»