수(需) — 물 위에 하늘. 구름은 모였으나 아직 비는 내리지 않는다. 좋은 일은 기다림이 필요하다.
효별 해설
초효：需于郊，利用恒，无咎。 Waiting in the outskirts — favorable to persist. Things have just begun; the goal is far — patience is needed.
이효：需于沙，小有言，终吉。 Waiting on the sand — some gossip and minor disputes, but ultimately auspicious. Nearing the goal but obstacles remain.
삼효：需于泥，致寇至。 Waiting in the mud — attracting bandits. A dangerous situation requiring extra caution.
사효：需于血，出自穴。 Waiting in blood — escaping from the cave. Surviving danger, turning peril into safety.
오효：需于酒食，贞吉。 Waiting with food and drink — staying upright brings good fortune. Conditions are ready; enjoy the fruits.
상효：入于穴，有不速之客三人来，敬之终吉。 Entering the cave — three uninvited guests arrive; treat them with respect and good fortune follows. Unexpected visitors may bring opportunity.