This is perhaps an odd question, but has the Male verse seen an expanded Hawala banking system? Or a more formal association under Islamic jurisprudence?
I'm not sure what Abacar would have done with the idea, but unless I profoundly misunderstand what Belloism is all about, I'd think Bello would have had quite a bit to say about it.
Of course Bello was more focused on communities, not far-flung enterprises for profit, but Hawala would surely be the more acceptable model for all the Islamic reformists.
I only ever really heard of the basic concepts of Hawala when it became a thing in "Minarets of Atlantis," but as far as I could suss out, in terms of high finance (not even the Belloist focus, let alone Abacarist!) it is a way of conceptualizing wealth as spread out in space rather than time. Rather than fetishizing a concept that wealth tends "naturally" to grow, a capitalist draws on existing wealth that happens to be spread out in space, among many owners, and offers these many owners the opportunity to realize profits in a joint enterprise where payment, in case the grand scheme falls through, is guaranteed by the reserves of wealthy people who have margin to spare--margin that already exists, not mystically assumed to be the inevitable and natural growth, that abstracts away from the labor processes that actually produce the increments.
I'd think Abacar would be critical of Hawala merchants--not in the sense of condemning them so much as demanding that close attention be paid to the exact means whereby the profits are realized, meaning that a big share of the returns should be distributed to the common workers. Bello, being less "Red" and more of a consensual moderate, would still demand that practices be constrained by what tends to nurture rather than disrupt the community. But these guys open up space for more, um, cosmopolitan, more hard-nosed wealth maximizers to focus on elaborating the institutions so that they offer scrupulous Muslim entrepreneurs who seriously want to avoid being accused of practicing "usury" opportunities for making sophisticated, complex transnational and/or highly elaborated industrial enterprise deals quite competitive with the wizardry of Western usury-based high finance. I think we met people like this in the development of Ottoman society.
For what it is worth, though I am no Muslim, I do suspect an elaborated Hawala would actually be a more rational foundation for high finance in general, and therefore it might find champions of many diverse kinds outside the Muslim world--devout Christians might recognize the importance that Western finances too avoid mere acceptance of actual usury for instance; the ferment of more or less half-baked financial fixes to the ills of capitalism characteristic of 19th Century USA (that OTL made "Single-Tax" on real estate profits Henry George a populist prophet who quite outshone Marx, for instance) might fasten on Hawala reforms as the cure to the various ills of American capitalism; even pragmatic, reformist Marxists of the Second International type (to borrow from OTL) might recommend it as more rational than the notions developed in early modern Christendom, much along the lines that tempt me.
OTL it is tainted with associations with Islamic fundamentalism and one also wonders how consistently it is developed; here lots of populist movements in the Islamic world would keep it grounded in humane and communalist priorities that probably flavor it with a distinctly leftist tang, despite the existence of quite hard-nosed Muslim entrepreneurs who also strongly influence its machinery. One imagines quite a lot of creativity and scholarly criticism in places like Turkestan as well as Abacar/Bello influenced West Africa. The American versions might have an early start in South Carolina, only to be "whitened" by the Populists of prairies and urban precinct alike. In Carolina there is a whole state government whose banking regulations are liable to be reformed along Hawala lines, though of course that would tend to run askew of US common law as enforced by Federal courts--unless the Hawalists make very compelling arguments before the judges, in which case infusions of Hawalist reasoning might be dispersed via Federal circuit court rulings across entire sectors of the nation with very little Islamic culture--perhaps rising to the Supreme Court and the law of the land from sea to sea. As I say, people with no Islamic background or sympathies might wind up championing it, in secular terms, all across the country. (They'd be opposed of course).
Jonathan is a lawyer before US benches--in criminal law, not civil to be sure, but I think he's better placed than I am to judge how it might infuse American thinking about the nature and proper functioning of finance. Bearing in mind that the people who hold most of the finances will have a strong say in the matter!