Rubaʿi the convention is sometimes extended so that the unrhymed line of the current stanza becomes the rhyme for the following stanza. The structure can be made cyclical by linking the unrhymed line of the final stanza back to the first stanza: ZZAZ. These more stringent systems were not, however, used by FitzGerald in his "Rubaiyat". Rubaʿi Rubāʿī (from "rubāʿiyy", plural "rubāʿiyāt") is the term for a quatrain, a poem or a verse of a poem consisting of four lines. It refers specifically to a form of Persian poetry, or its derivative form in English and other languages In classical Persian
Metre (poetry) Catullus 51 (itself an homage to Sappho 31): The Sapphic stanza was imitated in English by Algernon Charles Swinburne in a poem he simply called "Sapphics": The metrical system of Classical Arabic poetry, like those of classical Greek and Latin, is based on the weight of syllables classified as either "long" or "short". The basic principles of Arabic poetic metre "Arūḍ" or Arud ( ') Science of Poetry ( '), were put forward by Al-Farahidi (786 - 718 CE) who did so after noticing that poems consisted of repeated syllables in each verse. In his first book, "Al-Ard" ( ""),