Decree nisi

n. conditional order given by the highest court indicating that the defendant can explain his actions, order that will be used only if certain conditions are met (Law)

A decree nisi (non-absolute ruling) is a ruling by a court that does not have any force until such time that a particular condition is met. Once the condition is met the ruling becomes decree absolute and is binding. Typically, the condition is that no new evidence or further petitions with a bearing on the case are introduced to the court.
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Noun
1. a decree issued on a first petition for divorce; becomes absolute at some later date
(hypernym) decree, edict, fiat, order, rescript
(classification) law, jurisprudence

A provisional decision of a court which does not have force or effect until a certain condition is met such as another petition brought before the court or after the passage of a period time, after which it is called a decree absolute. - (read more on Decree nisi)