Do-bayti (; ), also known as fahlaviyat, is an ancient form of Persian poetry. It is used to describe a Persian quatrain (a stanza or poem of four lines), similar to Ruba'i but different in meter.
A do-bayti has four half-lines of 11 syllables each, and usually uses the hazaj meter:
The first two syllables may sometimes be replaced by â u or â âÂÂ.
The rhyme scheme is a a a a or a a b a.
When sung to a traditional melody, the first two lines are sung continuously in one 22-syllable phrase, and the 3rd and 4th lines in another, a little lower in pitch. (See External links below.)
A well-known writer of do-bayti poems is the 11th-century Baba Taher-e Oryan of Hamadan, who wrote in the Hamadani dialect (which, however, is very close to standard Persian). An example of one of his poems (converted to standard Persian) is the following:
For another example, see the article Persian metres#Do-bayti.