What is the ruling on someone who fondled his wife during the daytime in Ramadan, and unintentional penetration occurred, then he tried to complete the intercourse but his wife prevented him, so he stopped before ejaculation? And what is the ruling on his wife?

Sexual intercourse during daylight hours in Ramadan is forbidden and a major sin. It necessitates both making up the missed fast (qada') and expiation (kaffarah) by scholarly consensus. The expiation is to free a believing slave; if none is found, then to fast for two consecutive months; if unable, then to feed sixty poor persons. There is a difference of opinion regarding the obligation of expiation upon the compliant wife, but it is more cautious for her to also pay it.