If an elderly man prays in front of me and cannot stand except with difficulty, is it permissible for me to help him, with both of us in prayer?

The Shaykh : If a person is praying and there is an old, gray-haired man next to him? This is a contradiction, an old, gray-haired man?! "Old" is for a woman. A gray-haired man might find it difficult to stand up from prostration or from the sitting for the tashahhud. Is it permissible to help him stand up, with both of us in prayer? How do you help him? Do you turn around? Do you hold his hand? What do you think about this? ... By Allah, it appears that the best thing is not to help him, because this movement is not related to the validity of the prayer. Yes, it appears that he should not help him. Yes.