[SCAEUOLA libro primo regularum. ] §50.7.6.prLegato tempus prodest, ex quo legatus creatus est, non ex quo Romam uenit.
[SCAEVOLA, from the first book of Rules.] For an envoy, time runs in his favor from the moment he is appointed an envoy, not from the moment he arrives in Rome.
§50.7.6.1Sed si non constat, legatus sit an non, Romae praetor de hoc cognoscit.
But if it is not clear whether he is an envoy or not, the praetor at Rome takes cognizance of this.