The occasion of the hadith: Whoever witnesses our prayer and stands with us, whether by night or by day, has completed his Hajj

Question:
Also, this brother asks, Shaykh, what is meant by the saying of the Messenger (peace and blessings be upon him): “Whoever witnesses our prayer and stands with us ”? What is the occasion of that?

Answer:
This is a hadith the Prophet (peace and blessings be upon him) said to 'Urwah ibn al-Mudharris (may Allah be pleased with him). He came as a pilgrim and did not know 'Arafah. He said, “I did not leave a mountain without standing on it. Do I have a Hajj, O Messenger of Allah?” He said: “Whoever…”
…prays this prayer of ours and stays with us until we depart, and he had reached 'Arafah, whether by night or by day, has completed his Hajj and fulfilled his obligations. So if someone passes by 'Arafah, even if it is just a pass-by, and he is in the state of ihram and intending to perform Hajj, even if he does not know it, if he passes by it from after the 'Asr prayer on the Day of 'Arafah until the dawn of the Day of Sacrifice, he has reached the standing. This is from the facilitation, mercy, and expansion of Allah upon the community. Yes.