Your Eminence! Allah swears by the morning, and by the dawn, and by the night. What is the operative cause for "al-Asr" here to mean "the age"?

The questioner : He says: Your Eminence! Allah swears by the morning, and by the dawn, and by the night. What is the operative cause for "al-Asr" here to mean "the age"? Is there any indication pointing to this? Please benefit us; may Allah benefit you and protect you from the Fire?
The Shaykh: The indication for this is that the meaning of "al-Asr" as "the age" is that Allah the Exalted mentioned the thing by which He swore, which is the deeds of the servants that occur in this age Yes.