question #1 Sahih Muslim 911a, Book 10, Hadith 23 : What are the signs of Allah mentioned in relation to the sun and the moon?

Verily the sun and the moon are the two signs among the signs of Allah by which He frightens his servants and they do not eclipse on account of the death of any one of the people. So when you see anything about them, observe prayer, supplicate Allah till it is cleared from you.