What options does a person have when performing the expiation for breaking an oath?

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The person who has broken an oath has the choice: either to feed ten poor people, clothe them, or free a slave. Whichever of these three acts is performed is sufficient because God Almighty connected these options with the particle 'or' (aw), which denotes choice. Ibn Abbas stated that what is mentioned in the Book of God with 'or' grants choice, and what is mentioned with 'then whoever does not find' mandates the first option.