Completing and straightening the rows in the funeral prayer
Question: What is the ruling of completing and straightening the rows for the funeral prayer?
Response: The rows in the funeral prayer are like other rows, except the scholars have recommended the rows should not have less than three (men), even if the first rows are incomplete.
Shaykh Ibn ‘Uthaymeen
Majmoo’ Fataawa wa Rasaa.il Muhammad ibn Saalih al-‘Uthaymeen – Volume 13, Fatwa No.394 fatwaonline.com