Musnad Abi Ya'la 3942 — he narrated it from the Prophet ﷺ) that he ﷺ

It is narrated from Sayyiduna Anas (may Allah be pleased with him) (the narrator thinks that he narrated it from the Prophet (peace and blessings be upon him)) that he (peace and blessings be upon him) said: "Soon some people will come to my Pond who will be pulled away from before me. I will say: 'O my Lord, these are my companions!' And it will be said: 'Indeed, you do not know what new things they invented (in the religion) after you.'" In the chain of this narration the narrator had a doubt about whether it is attributed to the Prophet (marfu').