What is radeef and qafia?

Radeef and qafia are terms used in Arabic poetry to refer to the patterns of end rhyme and meter, respectively. Radeef is the repeating end rhyme pattern at the end of lines in a poem, while qafia is the metrical pattern or rhythmic structure that dictates the number of syllables in each line. Together, radeef and qafia help create the overall structure and flow of a poem.