If a gap opens in the first row during prayer, should I move forward to fill it?

Question:
He says: Honorable Shaykh, may Allah grant you success. If I am in the second row during prayer, and a gap opens in the first row, and I move forward to fill it, do I get reward for that, or is there sin on me because I left a gap in the row I came from?

Answer:
It is better that you stay in your place, and that the row with the gap closes up, that the row with the gap closes up and they fill it themselves, and you do not move during the prayer. Also, you will open a gap in the row you moved from. Stay in your place, and the row with the gap closes up and fills it. Yes.