Pushing people aside to make a place for oneself in the row

Q: When some people enter the Masjid (mosque) now to perform Salah (Prayer) and they see a completed row, whether there is a gap between the people who are performing Salah or not and whether there is another row or not, they push a large number of people aside to make a place for themselves in the row, which as you can imagine distracts many people. What is the ruling on someone who does this? We hope that you will offer advice and guidance to them and the congregation so they will be careful about filling the gaps. May Allah reward you. (Part No. 6; Page No. 326

A: If there is a gap in a row, it is permissible to do what was mentioned, as the congregation had neglected the Sunnah (supererogatory act of worship following the example of the Prophet) of filling gaps and empty spaces in the rows. However, if there is no gap in the row, dislodging people who are performing Salah and disturbing them will cause harm, so it is not permissible.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.