A common division distinguishes an appendix whose sense depends on the preceding setting from one cast as a relatively autonomous general maxim. The latter is described as being in the manner of a proverb (mukhraj makhraj al-mathal).
FormDistinguishing feature
Not proverb-likeThe earlier context supplies an important qualification
Proverb-likeThe second clause states a broadly intelligible rule in its own right
This is principally a division by semantic independence, not by the clause's length or rhyme.