Urwa reported,

Do not say "the sun was eclipsed" (kasafat), rather say "the sun was eclipsed" (khasafat).

Muslim 2105

Sahih

أخبرنا يحيى بن يحيى أخبرنا سفيان بن عيينة عن الزهري

عن عروة قال

لا تقل كسفت الشمس ولكن قل خسفت الشمس

مسلم 2105صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Muslim
Book
Eclipse
Chapter
What was shown to the Prophet ﷺ during the eclipse prayer of the matters of Paradise and Hell
Numbering
Darussalam 2105
Muslim 2105