If the listener only asks when, which part of “qad taḥaqqaqa al-waʿdu amsi” supplies the needed information?

Supplementary Practice 8: Rhetorical Analysis of Five Connected Passages

• Amsi, because it specifies the time
• Qad, which reinforces occurrence but does not supply a date
• Taḥaqqaqa, which reports realization but not its date
• Al-waʿd, which names the event but not its date