Musannaf Ibn Abi Shayba 3:1974

Abu Usama narrated to us, he said: Hammad ibn 'Ammara informed us, from Abu Tamima al-Hujaymi, that elders from Banu Hujaym sent a rider of theirs to Medina and to Mecca to ask on their behalf about the prostrations of the Quran. He returned to them and informed them that they were in consensus upon ten prostrations.