ParticleBasic senseImportant application
fiContainmentTime, place, conditional act
baAttachmentPrice, object of action, report
For fi, the question is when, where or subject to what event the action occurs. For ba, the question is what is connected to an action, an article or another term.
Compare fasting “during the month” with fasting the whole month; then compare an object “sold for wheat” with “wheat sold” directly. The particles help assign different legal roles and conditions.
A sound interpretation combines each particle’s basic meaning with the verb, the governed term and the context.