The Prophet ﷺ said, "Straighten your rows as the straightening of rows is essential for a perfect and correct prayer. "  

عَنِ النَّبِيِّ ﷺ قَالَ سَوُّوا صُفُوفَكُمْ فَإِنَّ تَسْوِيَةَ الصُّفُوفِ مِنْ إِقَامَةِ الصَّلاَةِ  

[Machine] The Messenger of Allah, ﷺ , said: "Arrange your rows (in prayer) properly, for indeed, part of perfecting the prayer is the proper arrangement of the rows."  

قَالَ رَسُولُ اللهِ ﷺ أَقِيمُوا صُفُوفَكُمْ فَإِنَّ مِنْ حُسْنِ الصَّلَاةِ إِقَامَةَ الصَّفِّ  

[Machine] The Messenger of Allah ﷺ said, "Straighten your rows, for indeed, the proper establishment of the rows is a part of perfecting the prayer."  

قَالَ رَسُولُ اللهِ ﷺ أَقِيمُوا صُفُوفَكُمْ فَإِنَّ مِنْ حُسْنِ الصَّلَاةِ إِقَامَةَ الصَّفِّ  

[Machine] "From the Messenger of Allah ﷺ , he said: 'Verily, one of the goodness of prayer is establishing the rows.'"  

عَنْ رَسُولِ اللهِ ﷺ قَالَ إِنَّ مِنْ حُسْنِ الصَّلَاةِ إِقَامَةَ الصَّفِّ  

[Machine] And the Messenger of Allah ﷺ said, "Establish the rows in prayer, for indeed, the proper arrangement of rows is part of the excellence of prayer."  

وَقَالَ رَسُولُ اللهِ ﷺ أَقِيمُوا الصَّفَّ فِي الصَّلَاةِ فَإِنَّ إِقَامَةَ الصَّفِّ مِنْ حُسْنِ الصَّلَاةِ  

[Machine] The messenger of Allah ﷺ said, "Arrange the rows in prayer, for indeed the straightening of the rows is part of the perfection of prayer."  

قَالَ رَسُولُ اللَّهِ ﷺ «أَقِيمُوا الصَّفَّ فِي الصَّلَاةِ فَإِنَّ إِقَامَةَ الصَّفِّ مِنْ حُسْنِ الصَّلَاةِ»  

"مِنْ حُسْنِ الصَّلاةِ: إِقَامَةُ الصَّفَ".  

This is what was transmitted to us by Abu Huraira from the Messenger of Allah ﷺ and, while making a mention of a few ahadith, said: (The Messengerof Allah directed us thus): Establish rows in prayer, for the making of a row (straight) is one of the merits of prayer. (Using translation from Muslim 435)   

"أقيموا الصّفَّ في الصلاة، فإن إقامةَ الصفَّ مِن حُسْنِ الصلاةِ .  

"أقِيمُوا صُفُوفَكُمْ فإِنَّ تَمَامَ الصَّلاةِ إقامَةَ الصُّفِّ".  

"سوُّوا صُفُوفَكُمْ، فَإِنَّ تَسْويَةَ الصُّفُوف مِن إِقَامةِ الصَّلَاةِ".