Related sur Shekalim 6:8

Thirteen bowings were there. R. Yehuda says: In the direction of a gate, prostration, and in the direction of a breach, bowing. And all the other prostrations that were in the temple were about a sacrifice; they were fixed and prescribed. and here and there there was no 'bowing', just kneeling and stretching out.

There were thirteen collection shofarot in the Temple, and was written upon each one "New shekels", "Old shekels", "[money for] bird sacrifice", "[money for] doves for a burnt offering", "wood", "frankincense", "gold for the Ark Cover", and [the remaining] six [shofarot] for voluntary offerings. [What does] "New shekels" mean? which [was paid] every year; and [what does it mean] "Old shekels"? Whoever did not pay a shekel tax in the previous year will pay it in the following year. Both these and those fall to the remnants of the chamber.

A woman who put the money for her bird sacrifice in the horn may eat of sacrifices in the evening. R. Yehuda says: There was no shofar there for bird sacrifices because of mixing, but someone said: I am responsible for turtledoves, so he brings [the money needed for this] and puts it in the shofar for turtledoves. [He said: I am in charge of] pigeons, so he brings [the money needed] and puts it in the shofar for pigeon.

"Frankincense" - If someone says: I have frankincense, he brings money for a handful of frankincense and puts it in the shofar. The priests pour it out and buy frankincense with it, which they offer on the altar.

If someone says: This mine is for a voluntary donation or: This Sela is for a voluntary donation, he brings [it] and puts [them] in the shofar for voluntary donation. The priests pour it out for and buy 2 for it! Burnt offering The flesh is for God and the skins are for the priests.