三軍未發，糧草先行 [－军－发－粮－－－]

Jyutping saam1 gwan1 mei6 faat3 ， loeng4 cou2 sin1 hang4
Pinyin sān jūn wèi fā ， liáng cǎo xiān xíng

Definitions (Wiktionary)
  1. proverb, figuratively
    one has to make preparations being doing something
    (syn.) 兵馬未動, 三軍未動, 糧草先行, 兵马未动, 粮草先行, 三军未动