This thing called Google... these people called NASA
" The LM descent stage was jettisoned into lunar orbit. The LM and CSM rendezvous and redocking occurred 8 hours after separation at 03:22 UT on 23 May.
Later on May 23 the LM ascent stage was jettisoned into solar orbit, ..."
I'm quite sure they were paying attention. Actually, at the time, so was I.
There is a marginally interesting question buried in the assumptions there - which is what the delta-V is for leaving lunar orbit into solar orbit.
It isn't much, for an object already in lunar orbit. Less than the delta-V required to bring a CSM back, I think.