Sayyiduna Hudhayfah (may Allah be pleased with him) narrates from the Prophet (peace and blessings be upon him) that he (peace and blessings be upon him) said: "Some people will certainly come to me at the Pond (of Kawthar), whom I will recognise; then they will be pulled away (on the way) before they reach me, and I will say: 'They are of me (that is, of my Ummah).' 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 Husayn (may Allah have mercy on him) except Abu Awanah (may Allah have mercy on him), and from Abu Awanah (may Allah have mercy on him) only Yahya bin Hammad (may Allah have mercy on him), while Ya'qub bin Ishaq al-Qulusi (may Allah have mercy on him) is alone in narrating it.
Hadith Referenceالمعجم الأوسط / باب الميم / 7171
Hadith Takhrij«أخرجه مسلم فى «صحيحه» برقم: 2297، وأحمد فى «مسنده» برقم: 23764، 23813، 23875، وابن أبي شيبة فى «مصنفه» برقم: 32323، 38332»