Well, I will tell you what not to do. Don't try to hold him in the sink while you spray him with the hose nozzle for punishment.
A gentleman at my wife's work had his cat fight back (duh!!) and now has an infection in his hand so bad that he might just lose it. Hopefully not, but considering his next specialist appointment is with a surgeon? Well let's just hope he is also an infection specialist.

With great power comes Awesome irresponsibility.