speak or act on hearsay evidence
捕风捉影
Catch at shadows@make accusations on hearsay
捕风捉影
Gossip is a fearful thing.
人言可畏
gossip is a fearful thing
人言可畏
Gossip a little less
闲话少说
Hearsay Tales New and Old
耳食录
Better one eye witness than two hearsay witnesses
耳闻不如目见
Gossip about this or that person
张家长李家短
Gossip about private morals
中冓之言