If the [identity of the] murderer is discovered before the calf has been decapitated, it should go out and pasture with the flock. [If] after the calf has been decapitated, it must be buried at its site, for it originally came [to atone] for an uncertain situation —- it has atoned for its uncertainty and its purpose has been fulfilled.  If the calf was decapitated and subse-quently the murderer was discovered, he should be executed.