Is 'Umar's saying, "O Sariyah, the mountain," a form of knowledge of the unseen, or is it among the miracles of the awliya (close friends of Allah)?

Question:
May Allah reward you, Honorable Shaykh. When 'Umar said to Sariyah, "O Sariyah, the mountain," is this considered knowledge of the unseen? And is knowledge of some of the unseen among the miracles of the awliya? If so, how is this reconciled with the saying of Allah the Exalted: ?

Answer:
Allah granted this to 'Umar for the benefit of the Muslims, for a karamah (a miracle granted to a righteous person) is only for a need of the religion or for the benefit of the Muslims. So Allah inspired 'Umar (may Allah be pleased with him) to say this word; he transferred his voice to the commander in the East, and they heard 'Umar's voice. Allah is capable of all things, and this is among the karamahs of the awliya (close friends of Allah). The karamahs of the awliya are established by the Book and the Sunnah, and the people of the Sunnah have agreed upon them. They are the extraordinary events that Allah performs through the hands of His awliya, either because they have a need for them or for the benefit of the Muslims. This one that occurred on the tongue of 'Umar is of this type, for the benefit of the Muslims and for the need of the religion.