Musnad Ahmad 31:615

Hisham ibn Sa'id narrated to us, Fulayh and Surayj informed us, they said: Fulayh narrated to us, from Muhammad ibn 'Amr ibn Thabit, from his father, who said: Ibn 'Umar passed by me, and I said: "From where have you set out early this morning, O Abu 'Abd al-Rahman?" He said: "To Abu Sa'id al-Khudri." So I went with him. Abu Sa'id said: I heard the Messenger of Allah (peace and blessings of Allah be upon him) say: "I had forbidden you from the meat of the sacrificial animals and storing it beyond three days, so eat and store, for Allah has brought about abundance. And I had forbidden you from certain types of drinks and fermented beverages, so drink, but every intoxicant is unlawful. And I had forbidden you from visiting graves, so if you visit them, do not say anything obscene."