Musannaf Ibn Abi Shayba 3:3161

Ibn Idris narrated to us, from Ibn Jurayj, from Muhammad ibn ‘Abbad ibn Ja‘far, who said: The Messenger of Allah (may Allah bless him and grant him peace) said: "It may be that one of you takes a small flock of sheep at a distance of two or three miles, so Friday comes and he does not attend it, then it comes and he does not attend it, until Allah seals his heart."