《资治通鉴·汉纪·汉纪十八》
大费用既已节省，便可不征发徭役，以防止出现预想不到的变故，此其十二。
大费既省，繇役豫息，以戒不虞，十二也。
Twelfth: By avoiding great expense, it prevents corvee labor and prevents unforeseen difficulties.
<s>[INST] Translate the following Classical Chinese text into English: 大费既省，繇役豫息，以戒不虞，十二也。 [/INST] Twelfth: By avoiding great expense, it prevents corvee labor and prevents unforeseen difficulties.</s>
Translate the following Classical Chinese text into English: 大费既省，繇役豫息，以戒不虞，十二也。
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Twelfth: By avoiding great expense, it prevents corvee labor and prevents unforeseen difficulties.
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