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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
bayhaqi:6375 – Abū Zakariyyā b. Abū Isḥāq al-Muzakkī > Abū al-ʿAbbās Muḥammad b. Yaʿqūb > al-Rabīʿ > al-Shāfiʿī > Ibrāhīm b. Muḥammad > ʿAbdullāh b. Abū Bakr > ʿAmr or Ṣafwān b. ʿAbdullāh b. Ṣafwān

[Machine] I saw Ibn Abbas praying two units of prayer on the back of Zamzam during the eclipse of the sun, two units of prayer in each unit.  

البيهقي:٦٣٧٥ – أَخْبَرَنَا أَبُو زَكَرِيَّا بْنُ أَبِي إِسْحَاقَ الْمُزَكِّي ثنا أَبُو الْعَبَّاسِ مُحَمَّدُ بْنُ يَعْقُوبَ أنبأ الرَّبِيعُ أنبأ الشَّافِعِيُّ أنبأ إِبْرَاهِيمُ بْنُ مُحَمَّدٍ حَدَّثَنِي عَبْدُ اللهِ بْنُ أَبِي بَكْرٍ عَنْ عَمْرٍو أَوْ صَفْوَانَ بْنِ عَبْدِ اللهِ بْنِ صَفْوَانَ قَالَ

رَأَيْتُ ابْنَ عَبَّاسٍ صَلَّى عَلَى ظَهْرِ زَمْزَمَ لِخُسُوفِ الشَّمْسِ رَكْعَتَيْنِ فِي كُلِّ رَكْعَةٍ رَكْعَتَيْنِ  

See similar narrations below:

Collected by Suyūṭī
suyuti:422-393b – Ibn ʿUmar
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السيوطي:٤٢٢-٣٩٣b –

"عَنِ ابْنِ عُمَرَ أَنَّ رَسُولَ الله ﷺ صَلَّى فِى كسُوفِ الشَّمْسِ رَكَعَتَيْنِ فِى كُلِّ رَكْعَةٍ رَكْعَتَيْنِ".  

ابن النجار