Musannaf Ibn Abi Shayba 33:720

Zayd ibn al-Hubab narrated to us, he said: Abu Sinan informed us, he said: Abu Ishaq narrated to us, from ‘Amr ibn Maymun, regarding His saying: "That is because they disliked what Allah revealed, so He rendered their deeds worthless," he said: "The obligatory duties (al-fara'id)."