- Narrated by An-Nu'man bin 'Bashir:
The Prophet said, "Straighten your rows or Allah will alter your faces."
- Narrated by Anas:
The Prophet said, "Straighten your rows, for I see you from behind my back.'
- Narrated by Anas bin Malik:
Once the Iqama was pronounced and Allah's Apostle faced us and said, "Straighten your rows and stand closer together, for I see you from behind my back.'
- Narrated by Anas bin Malik
The Prophet said, "Straighten your rows as the straightening of rows is essential for a perfect and correct prayer. "
- Narrated by Anas bin Malik
The Prophet said, "Straighten your rows for I see you from behind my back." Anas added, "Everyone of us used to put his shoulder with the shoulder of his companion and his foot with the foot of his companion."
[All of the aforementioned ahadith are found in Sahih Al-Bukhari, Volume 1]