In Mexican Catholic culture, a "manda" is a promise between an individual and God that if one is blessed by a favor, they must return a favor or a sacrifice in His name. Mandas are a way of demonstrating thanks for a blessing one asks for from God and the Saints. Mandas are also practiced in Mexican folk Catholicism, where they refer to a vow to a saint whose assistance is sought because he or she specializes in a specific cause. A manda is a religious quid pro quo whereby an older Mexican American promises to perform a religious act if the Virgin or one of the saints grants a favor.
Mandas are often made during the celebration of Our Lady of Guadalupe, which takes place on December 12th. One of the most common mandas is to walk barefoot during "La Peregrinación," a pilgrimage that takes place on December 12th or within a few days before. Mandas can also be made for other reasons, such as to abstain from drinking or using drugs, or to fulfill a personal commitment.
In summary, a manda in Mexican culture is a promise made to God or a saint in exchange for a favor granted. It is a way of demonstrating thanks for a blessing received and is often practiced during religious celebrations and pilgrimages.
