The United Arab Emirates is a small but rich rich country with a million or so citizens and nearly 9 times as many foreign migrants, mostly from poor Asian and Arab countries. In 2019 remittances home from these guest workers amounted to $45 billion (12% of GDP). In comparison, total overseas aid from rich countries in 2019 was $145 billion (an average of 0.3% of donors' national income).
Another way of putting this is that one small country's entirely self-interested transactional relationship with the poor world is responsible for transferring 30% as much wealth as all the high minded moral principles of the whole world turn out to be worth. The lesson I draw from this astonishing statistic is that anyone who really cares about reducing global poverty should be looking at how to make more countries like the UAE, not vice versa.

