I'm an attorney who received a fee that I split 50/50 with another attorney, and I issued a 1099 to him. Where do I list the money I split with him so I get 100% deduct?

I received legal fees in my name.  I immediately paid half the fees with other attorney who worked on the case with me.  I issued a 1099 to him. Where do I list the money I paid out (his split) so that I get a 100% deduction as I never saw that money?