The man said: "Is there anyone poorer than us? Between the two volcanic tracts of Medina, there is no household more in need than ours." The Prophet, peace and blessings of Allah be upon him, laughed until his molar teeth appeared, and said: "Go and feed it to your family."
It was narrated by the collective (al-Jam'ah). The position of the majority is that the man and the woman are equal in the obligation of the expiation (kaffarah) upon both, provided they both engaged in intercourse intentionally, were free to choose, were fasting during the day of Ramadan, and had the intention to fast.
If the intercourse occurred due to forgetfulness, or if they were not acting of their own free will—such as being coerced into it—or if they did not have the intention to fast, then there is no expiation upon either of them. If the woman was coerced by the man, or if she was not fasting due to a valid excuse, the expiation is mandatory upon him, not her.
Al-Shafi'i's school holds that there is no expiation upon the woman absolutely, neither in the case of voluntary action nor in the case of coercion. She is only required to perform the make-up day (qada').
Al-Nawawi said: "The more correct view—in general—is the obligation of one expiation upon him specifically, for himself alone, and that there is nothing upon the woman, and the obligation does not apply to her because it is a financial right restricted to the act of intercourse, so it is exclusive to the man, not the woman, like the dowry (mahr)."
Abu Dawud said: "Ahmad was asked about someone who approached his wife in Ramadan; is there an expiation upon her? He said: 'We have not heard that there is an expiation upon the woman.'" It states in 'al-Mughni': "The reason for this is that the Prophet, peace and blessings of Allah be upon him, ordered the one who engaged in intercourse in Ramadan to free a slave, and did not order anything regarding the woman, despite his knowledge that it occurred from her."