Sahih Bukhari | Volume 8 | Hadith Number 578

Narrated by 'Abdullah
The Prophet said, "I am your predecessor at the Lake-Fount." 'Abdullah added: The Prophet said, "I am your predecessor at the Lake-Fount, and some of you will be brought in front of me till I will see them and then they will be taken away from me and I will say, 'O Lord, my companions!' It will be said, 'You do not know what they did after you had left."