How often is one expected to make pilgrimage Mecca and why?

Muslims are expected to make pilgrimage to Mecca (Hajj) at least once in their lifetime if they are physically and financially able to do so. This is one of the Five Pillars of Islam, the religious duties that are obligatory for all Muslims.

The pilgrimage takes place during the Islamic month of Dhul-Hijjah, the 12th and final month of the Islamic calendar. It begins with the Day of Tarwiyah, the 8th day of Dhul-Hijjah, and concludes on the 13th day of Dhul-Hijjah, which is the day of Eid al-Adha, the Festival of Sacrifice.

During the pilgrimage, Muslims perform a series of rituals that are symbolic of their journey to God and their obedience to Him. These rituals include circling the Kaaba, a cube-shaped building in the center of the Grand Mosque in Mecca; running between the hills of Safa and Marwa; drinking water from the well of Zamzam; and stoning the devil at Mina.

The pilgrimage to Mecca is an important spiritual journey for Muslims. It is believed to cleanse one of their sins and bring them closer to God.