The ruling on drinking during voluntary prayer

Question:
He says: Honorable Shaykh, may Allah grant you success, is it permissible to drink water during voluntary prayer? They said it is permissible, and Ibn al-Zubayr did it. This is if one prolongs the voluntary prayer.

Answer:
and it tires him, and he needs water to drink a small amount that he monitors as it goes down his throat. He used to prolong it, whereas this voluntary prayer is light, so it does not require anything. And this is in the night prayer; I think Ibn al-Zubayr used to do it in the night prayer, that he (may Allah be pleased with him) used to prolong the prayer.