Musnad Ahmad 30:3164

'Abd al-Rahman narrated to us, from Hammad, from Thabit, from Abu Rafi', from Abu Hurayrah, from the Prophet, peace and blessings of Allah be upon him, who said: "Zakariya was a carpenter." 'Abd al-Rahman said: Sometimes he would attribute it to the Prophet (marfu'), and sometimes he would not attribute it to him.