以身相許 [－－－许]

Jyutping ji5 san1 soeng1 heoi2
Pinyin yǐ shēn xiāng xǔ

Definitions (CC-CEDICT)
  1. to give one's heart to
  2. to devote one's life to
Definitions (粵典–words.hk)
  1. 動詞
    為​咗​報答​對方​，​承諾​同​佢​結​婚​，​將成個​人​奉獻​畀​佢
    to pledge to marry someone (as an act of gratitude or to repay a big favour)