Chapter: The straightening of the rows is amongst those obligatory and good things which make your As-Salat (the prayer) a correct and perfect one.
Narrated Anas bin Malik:The Prophet (ﷺ) said, "Straighten your rows as the straightening of rows is essential for a perfect and correct prayer. "
Reference
Sahih al-Bukhari 723
In-book reference
Book 10, Hadith 117
USC-MSA web (English)
Vol. 1, Book 11, Hadith 690
Translation by Dr. M. Muhsin Khan · Language: EN
Sahih
Arabic Text
حَدَّثَنَا أَبُو الْوَلِيدِ، قَالَ حَدَّثَنَا شُعْبَةُ، عَنْ قَتَادَةَ، عَنْ أَنَسٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " سَوُّوا صُفُوفَكُمْ فَإِنَّ تَسْوِيَةَ الصُّفُوفِ مِنْ إِقَامَةِ الصَّلاَةِ ".