When does the fasting person break his fast?

Question:
The questioner says: If the sun's disk disappears behind a mountain, and the difference between the adhan and the setting of the disk is ten minutes, does the fasting person break his fast on the basis of delaying the iftar?

Answer:
No, this is not the setting of the sun. Its setting is not behind a wall, nor behind a mountain, nor behind a tree. This is not the setting. The setting is when it drops into the horizon, when the sun drops into the horizon. As for its disappearing behind this, what is called setting is when something obstructs it. A wall obstructs it, or a tree obstructs it, or a mountain obstructs it; this is not the setting of the sun.
He (peace and blessings be upon him) said: When the night approaches, that is the sign of the setting of the sun But if it disappears behind a mountain, the night does not approach, and the day does not depart, because the day still exists. Yes. Yes.