Is it true that Jews fast? What are the differences and similarities between their fasting and that of Muslims? How did they receive the rulings on fasting? Is fasting in Christianity limited to abstaining from certain types of food?

Fasting was obligatory for previous nations just as it was made obligatory for the nation of Muhammad, peace be upon him. The manner of fasting for Jews and Christians differs from that of Muslims in terms of time, method, and belief. Jews fast from before sunset for a full day, abstaining from food, drink, and conjugal relations. They have fasting on various scattered days for occasions, the most important of which is the fast of Yom Kippur. As for Christians, some abstain from food until midday, and some from morning until evening. They fast on certain days such as Wednesday and Friday, and the Christmas fast. Some Christians believe that fasting is optional and not obligatory.