When Crassus left for his province he was hounded by a tribune who formally called on the gods to curse the proconsul and the unjust war he planned. Personal hatreds and rivalry loomed larger in most senators' minds than the good of the Republic.
Notes from Wikiquote
Crassus left Rome for Syria in November 55 BC. See: Cicero, ad Atticum, 4, 13; Plutarch, Crassus, 16