[bypeTeenehalT]

As I have established from one of the threads I made quite some time ago that sunnis pretty much accept everything inside sahih bukhari, can you so kindly explain these narrations for me and who they're referring to?

Narrated '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.'
Sahih al-Bukhari Hadith: 8.584 Narrated Anas:

The Prophet said, "Some of my companions will come to me at my Lake Fount, and after I recognize them, they will then be taken away from me, whereupon I will say, 'My companions!' Then it will be said, 'You do not know what they innovated (new things) in the religion after you." (also Sahih Muslim, part 15, pp 53-54). Sahih al-Bukhari Hadith: 8.586
Narrated Ibn al-Musaiyab:

"Some men from my companions will come to my Lake-Fount and they will be driven away from it, and I will say, 'O Lord, my companions!' It will be said, 'You have no knowledge of what they innovated after you left: they turned APOSTATE as renegades (reverted from true Islam)." (also Sahih Muslim, part 10, p64, also P59). Many thanks