Talmud (Rodkinson Edition) — Book 2…
“ The drink-offerings with goats and sheep were the same, hence the seal inscribed "kid" served for both. One 'who brought a ram, however, which required a larger quantity of wine and meal, would receive a separate seal, inscribed "ram." As for offerings of the herds, they were all equal, small or large, male or female; hence the seal inscribed "calf" sufficed for all. Those who were afflicted with sores, and had to bring two rams and one sheep, received a seal inscribed "sin" (which had the hidden purpose of signifying that sores were the consequence of sin) . ”
