Sunan an-Nasa'i
Book 16: The Book of Eclipses
كتاب الكسوف
45 hadith in this book
Chapter 4 The command to pray when there is a lunar eclipse
باب الأَمْرِ بِالصَّلاَةِ عِنْدَ كُسُوفِ الْقَمَرِ
It was narrated that Abu Mas'ud said: "The Messenger of Allah (ﷺ) said: "The sun and the moon do not become eclipsed for the death or birth of anyone, rather they are two of the signs of Allah (SWT), the Mighty and Sublime, so when you see that then pray.'"
أَخْبَرَنَا يَعْقُوبُ بْنُ إِبْرَاهِيمَ، قَالَ حَدَّثَنَا يَحْيَى، عَنْ إِسْمَاعِيلَ، قَالَ حَدَّثَنِي قَيْسٌ، عَنْ أَبِي مَسْعُودٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " إِنَّ الشَّمْسَ وَالْقَمَرَ لاَ يَنْكَسِفَانِ لِمَوْتِ أَحَدٍ وَلَكِنَّهُمَا آيَتَانِ مِنْ آيَاتِ اللَّهِ عَزَّ وَجَلَّ فَإِذَا رَأَيْتُمُوهُمَا فَصَلُّوا " .
Hadith text, translations and grading are courtesy of Sunnah.com.