In a narrow mosque where a wall cuts through only the third row, is it better to leave the rows as they are, with one row interrupted by the wall, or to leave the interrupted row and pray in the row after it, knowing that leaving the row will result in not fulfilling "and draw close to each other," not having space for newcomers, and varying distances between rows? And in this case, does the command take precedence over the prohibition, or vice versa?

The Prophet's prayer (peace be upon him) between two pillars in the Kaaba indicates the permissibility of an individual praying between pillars. Thus, the prohibition of praying between pillars is specific to congregational prayer. As for preferring between rows being close together but cut off by a wall, or being spaced out but connected, the connection of the row without closeness is preferable to cutting off the row with closeness. This is because praying between pillars is prohibited, while closeness is commanded. What is prohibited must be avoided absolutely, and what is commanded is done to the best of one's ability. Cutting off the row with a wall is prohibited, except in cases of narrowness, in which case there is no harm.