Reference for Shevuot 24:4
תניא נמי הכי ומודה ר"ש בשעיר שאם לא קרב ברגל יקרב בר"ה ואם לא קרב בר"ח יקרב ביוה"כ ואם לא קרב ביוה"כ יקרב ברגל ואם לא קרב ברגל זה יקרב ברגל אחר שמתחלתו לא בא אלא לכפר על מזבח החיצון
I told it him; and in the name of R'Shimi of Nehardea I told it him; for R'Shimi of Nehardea said: The surplus offerings are utilised as congregational donations;<span class="x" onmousemove="('comment',' And the money obtained from their sale is used for providing burnt-offerings as dessert for the altar on behalf of the congregation.');"><sup>4</sup></span> and a burnt-offering of a bird cannot be a congregational burnt offering.<span class="x" onmousemove="('comment',' Lev. I, 14: He shall bring his offering of turtle-doves or of young pigeons. His offering: an individual may bring a bird as an offering, but not a congregation. (Sifra.)');"><sup>5</sup></span>