Keritot 26: The Asham Taluey and Atonement on Yom Kippur Regarding Women and Miscarriage

Today's daf discusses some of the differences and similarities between the asham taluey and the atonement offered on Yom Kippur.  Our Mishna yesterday's day taught that if we are obligated to bring an asham taluey and we do not do so until Yom Kippur, we have the opportunity to atone on Yom Kippur instead of bringing the offering.  Every other sacrifice must be brought even if Yom Kippur comes and goes. Rabbi Elazar notes that in Vayikra (16:30), we learn that "For on this day shall atonement be made for you, the cleanse you; from all your sins shall you be clean before the Lord."  We are taught that Yom Kippur offers atonement for sins that only G-d knows - these are the sorts of questionable sins which are known by G-d.

In the Gemara we are affronted with whether or not this would include the sin offering brought by a woman who is  uncertain whether she is obligated to bring the korban chatat after giving birth - if she miscarried and she is unclear whether the embryo had developed to the point where she is obligated to bring a korban (a sheep in its first year as a burnt offering and a dove as a sin offering).  Is she freed from her obligation if only G-d knows whether or not she is truly obligated?

Rav Hoshaya says that she must bring the sacrifice because not all sin offerings are brought to atone for sin.  A woman after childbirth brings a sacrifice as part of her purification ritual so that she is again able to enter the Temple and eat sanctified foods.  Yom Kippur cannot atone for errors regarding ritual purity laws.