The ruling on drinking during prayer

The questioner:
The second question, O 'Abd al-Rahman. The second one: We were in the 'Isha' prayer, and one of the brothers next to me stood up for the second rak'ah while he was sitting, opening the water and drinking. He delayed standing up, and I do not know what the ruling on that is.

The Shaykh:
Yes. One of the questions.

The questioner:
The question was that there was a man next to me in the 'Isha' prayer. We stood up for the second rak'ah, but he remained opening the water and drinking during the prayer. So I do not know what the ruling on his prayer is, meaning?

The Shaykh:
His prayer is invalid if he drinks during the prayer; his prayer is invalid. It is not permissible for him to drink or eat during the prayer. This is only permissible in voluntary prayer, where one may drink a sip of water, just as Ibn al-Zubayr (may Allah be pleased with him) did in the night prayer, because it is long. As for the obligatory prayer, no, one does not drink or eat in it. Yes.