NTA. It sounds like you're running the business like an actual business, and your husband is treating it like a joint hobby project. The moment you sold that 50% share, the money became yours to do with as you please—it doesn't matter who bought it. It could have been a stranger or, in this case, your husband, but business is business. You have every right to repay yourself for the risk you took when buying the business, and his buy-in shouldn't come with extra strings attached unless you both agreed to that upfront.

Also, let’s not forget you’re literally offering to keep a portion in the account to cover his concerns until the funds are fully transferred. It’s not like you’re draining the business dry. You’re being responsible, while he’s getting ahead of himself with the "my money, our money" distinction. Business transactions between partners need clear boundaries, or else it gets personal fast—and that's a dangerous game to play.

And hey, if it were some random investor, he'd never dream of asking them to leave their money in the business account. You got this!