Is the reward for sa'y (walking between al-Safa and al-Marwah) on the ground floor the same as the reward for sa'y on the second or third floor?

Question:
He says: Honorable Shaykh, may Allah grant you success, is there a difference in terms of virtue and reward between sa'y on the ground floor, the second floor, or the third floor?

Answer:
Yes, there is a difference. Sa'y on the ground floor is the original practice. Sa'y on the second floor is for when there is a need, when the ground floor becomes crowded.