صحيح البخاري
Sahih Bukhari
كتاب الكسوف
The Book of The Eclipses.
باب هل يقول كسفت الشمس أو خسفت :
Chapter. Should one say: The sun Kasafat or Khasafat? (Two verbs used to mean "eclipse", the first is often used for the sun and the second for the moon). Allah says: "And the moon Khasafat (eclipsed)." (V. 75:8)