What is the ruling on a husband swearing falsely to his wife to avoid problems with her? And what is the ruling on someone who broke their fast on the twenty-ninth day of Ramadan based on an official announcement, and then it became clear that Ramadan was thirty days?

It is permissible for a husband to lie to his wife to preserve the marital bond and good companionship, provided that it does not lead to the loss of a right. As for swearing upon a blatant lie, it is forbidden. It can be replaced by dissimulation (tawriyah) and equivocation (ma'arid), such as swearing to a statement that can bear more than one meaning, intending the truthful meaning with the oath. In this, there is an escape from blatant lying, especially if the intention is reconciliation and the preservation of the marital relationship. Scholars have permitted lying if it is the only way to achieve a recognized benefit or ward off harm.

Regarding fasting, if it is established that Ramadan was thirty days in the country where the questioner fasted, or in a neighboring country that shares the same moon sighting, and the questioner broke his fast on the twenty-ninth day, then he must make up two days to complete the month according to the established sighting.