Ab urbe condita

Titus Livius (Livy)

Livy. History of Rome, Volumes 1-2. Roberts, Canon, Rev, translator. London, New York: J. M. Dent and Sons; E. P. Dutton and Co., 1912.

Then a heifer of conspicuous beauty was taken from the herd, and the first sacrifice was offered; the Potitii and Pinarii, the two principal families in those parts, were invited by Hercules to assist in the sacrifice and at the feast which followed.

It so happened that the Potitii were present at the appointed time and the entrails were placed before them; the Pinarii arrived after these were consumed and came in for the rest of the banquet.