What metaphors are used in The Essential Rumi by Maulana Jalial al-Diin Riumii?

Riumii discusses immediate or rapid marriage through a metaphor, describing it as a simple case of what in the American vernacular is "knowing a good thing when you see it". He describes a falcon, well suited to the royal household, just happening to land on your shoulder. This is intensely good fortune and one should definitely accept this great gift.