In kaʾanna futāta al-ʿihn ... ḥabbu al-fanā, kaʾanna governs a nominal construction: futāta is its accusative subject, al-ʿihni a genitive complement, and ḥabbu the nominative predicate. Fī kulli manzilin establishes the recurring setting.
Lam yuḥaṭṭam has a negating particle that makes the imperfect jussive, with poetic rhyme affecting the surface vowel. The berries are uncrushed; the comparison concerns small scattered colored fragments.