不足為憑 [－－为凭]

Jyutping bat1 zuk1 wai4 pang4
Pinyin bù zú wéi píng

Definitions (CC-CANTO)
  1. not enough to prove or insufficient proof
Definitions (Wiktionary)
  1. phrase, idiomatic
    to afford little or no evidence; to have flimsy evidence; cannot be taken as evidence
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）