Musannaf Ibn Abi Shayba 34:264

Ibn Fudayl narrated to us, from 'Umarah ibn al-Qa'qa', from Abu Salih, from Abu Hurayrah; and Abu Mu'awiyah narrated from al-A'mash, from Abu Salih, from Abu Hurayrah, from the Prophet (may Allah bless him and grant him peace) who said: "The first group to enter Paradise from my nation will be in the form of the moon on the night of the full moon. Then those who follow them will be like the most brilliant star in the sky in terms of illumination."