Imam al-Sadiq (AS) said, interpreting the above verse: ‘The first [undetermined] term is suspended; He can expedite and postpone it as He wishes. As for the specified term, that is what He wills to occur as a result of the Night of Ordainment (laylat al-qadr) to the next years Night of Ordainment; and that is Allahs statement: “when their time comes, they shall not defer it by a single hour nor shall they advance it”.