It is narrated from Sayyiduna Samurah bin Jundub (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "People who used to be with me will come to me, and when they are brought up to me and I see them, they will suddenly be pulled away from before me. So I will say: 'O my Lord! These are my dear companions, my dear companions!' And it will be said: 'Indeed, you do not know what new things they invented (in the religion) after you.'"
No one narrated this hadith from Qatadah (may Allah have mercy on him) except al-Hakam bin Abd al-Malik (may Allah have mercy on him), and al-Hasan bin Bishr (may Allah have mercy on him) is alone in narrating it.
Hadith Referenceالمعجم الأوسط / باب الميم / 6598
Hadith Takhrij«أخرجه الطبراني فى «الكبير» برقم: 6856»