Musannaf Ibn Abi Shayba 34:258

Ibn Ishaq narrated to us, from Iyad ibn Dinar, the freed slave of Layth, from Abu Hurayrah, that he heard him say: Abu al-Qasim (may Allah bless him and grant him peace) 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 brightly shining star in the sky."