Shuba reported,

With the chain of Ibn Muaz, from Shuba, from Amash, from Ibrahim, from Abu Muamar, that Abdullah bin Masud said, "The moon split into two halves during the time of the Messenger of Allah ﷺ. The mountain concealed one half, while the other half was above the mountain. The Messenger of Allah ﷺ then said, 'O Allah, bear witness.'"However, in the version transmitted by Ibn Abu Adi, he said, "Bear witness, bear witness."

Muslim 7075

Sahih

و حدثنيه بشر بن خالد أخبرنا محمد بن جعفر ح و حدثنا محمد بن بشار حدثنا ابن أبي عدي كلاهما عن شعبة بإسناد ابن معاذ عن شعبة نحو حديثه غير أن في حديث ابن أبي عدي فقال اشهدوا اشهدوا

مسلم 7075صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Muslim
Book
Description of the Resurrection, Paradise, and Hellfire
Chapter
Splitting of the moon
Numbering
Darussalam 7075
Muslim 7075