«اِلشَّحَّاتْ لُهْ نُصِّ الدُّنْيَا»

The beggar is pictured as owning half the world because he is never tied to one spot. He wanders from one place to the next and collects something wherever he stops, so the territory he covers becomes, in effect, his. 'Half the world' is hyperbole for wide reach, not literal wealth.

More broadly, the saying observes that someone who keeps moving and keeps asking ends up with a wide field of supply. Many small takings from many places add up to a share that can look surprisingly large.

Fits a wry remark about someone who moves from place to place asking or collecting, so that a little gathered everywhere adds up to a great deal. It can sound teasing or mocking rather than admiring, and should not be taken as praise of begging.