Illegal strikes: head-stomps, back-of-head, spine, eye-poke, throat — caution → DQ; Strikes to grounded opponent's head: generally restricted (specific rule varies by edition); Passivity: warning → caution → opponent advantage
Why people argue about this
People often assume that a caution is just a warning in Combat Sambo, forgetting its serious nature as it precedes disqualification (DQ), leading them to argue about how severe they believe such a minor infraction should be. The confusion arises because this rule combines the severity of a penalty with the immediate threat of ending the match right after issuing a caution.