Related על כתובות 11:4

She [a widow] that sold something worth 101 zuz for 100, even if she says "I will return the [extra] zuz to the inheritors"—her sale is null and void. Rabban Shimon ben Gamliel says: Her sale certainly stands, and she should return the zuz to the inheritors; and [her sale is void] only if there was some left over [from the sale that she did not give to the inheritors]. Therefore, if she reduced or added [to the price of the property she is selling], she only has the price that she sold it [and has to return the excess to the inheritors]. (Based on Ehrfurt manuscript:) Rabbi Liezer: An orphan girl has [the right to] worn out clothes [like a widow]. Rabbi Yehudah said in the name of Rabbi Liezer: An orphan girl has [the right to] fruit [i.e. interest from her property].