The Prophet (ﷺ) said: The best of you are those whose shoulders are soft in prayer.
Sunan Abi Dawud Book 2, Hadith 282
← Previous Hadith The Prophet (ﷺ) said: Complete the front row, then the one that comes next, and if there is any incompleteness, let it be in the last row.

Sunan Abi Dawud Book 2, Hadith 281 Next Hadith → I offered the Friday prayer along with Anas ibn Malik. We were pushed to the pillars (due to the crowd of people). We, therefore, stopped forward and backward. Anas then said: We used to avoid it (setting a row between the pillars) during the time of the Messenger of Allah (ﷺ).

Sunan Abi Dawud Book 2, Hadith 283