Musannaf Ibn Abi Shayba 3:3031

Abu Bakr narrated to us, he said: Abu Khalid al-Ahmar narrated to us, from Muhammad ibn ‘Ajlan, from ‘Amr ibn Shu‘ayb, from his father, from his grandfather, who said: The Messenger of Allah (may Allah bless him and grant him peace) forbade forming circles for conversation on Friday before the prayer.