The duration of the prohibited time when the sun rises

Question:
He says: Honorable Shaykh, may Allah grant you success, one of the prohibited times is from when the sun rises until it passes its zenith. What is the duration of that in minutes now? Is it ten minutes before the adhan for the midday prayer?

Answer:
When looking at the details, one looks at the sun itself and at the shadow. When the shadow shrinks from the east and the west, and no shadow of the sun remains in the middle, it is not permissible to pray. When a shadow begins from the east, its head has passed, for the sun has set. "Establish prayer at the setting of the sun" means the setting of the sun. When a shadow begins from the east, the prayer has become permissible. So he is regretful, yes.