(4) 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.'"
Reference: Sunan an-Nasa'i 1462
In-book reference: Book 16, Hadith 4
English translation: Vol. 2, Book 16, Hadith 1463