Musnad Ahmad 1017:81

Ya'qub ibn Ibrahim narrated to us, my father narrated to us, from Muhammad ibn Ishaq, from Salamah ibn Kuhayl, that he narrated from Abdullah ibn Buraydah al-Aslami, from his father, Buraydah ibn al-Hasib, from the Messenger of Allah, may Allah bless him and grant him peace, that he said: "I had forbidden you from three things: from visiting graves, so visit them, for in visiting them there is a sermon and a lesson. And I had forbidden you from the meat of the sacrificial animals beyond three days, so eat and store. And I had forbidden you from nabidh (fermented drink) in these vessels, so drink, but do not drink anything prohibited."