I had sent one personal injury attorney’s paralegal quite a bit of business. When a friend recommended I inquire if he’d be willing to pay some sort of fee for future referrals, buy antibiotics without prescription he said it was illegal to even discuss such things.

All these referrals were personal friends (I don’t work for a hospital or an ambulance service or something) so I don’t understand why that would be illegal. Any ideas?
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If answering, can you please include a citation that supports the answer? Thanks.