壽終內寢 [寿终内寝]

Jyutping sau6 zung1 noi6 cam2
Pinyin shòu zhōng nèi qǐn

Definitions (粵典–words.hk)
  1. 動詞
    女性​享盡天​年​，​安祥​咁​自然​死亡
    (of women) to die a natural death at a high age