مسند اسحاق بن راهويه
Musnad Ishaq bin Rahwiya
كتاب الصلوٰةBook of Prayer
Statement about straightening the rows in prayer
Hadith 175
وَبِهَذَا، عَنْ رَسُولِ اللَّهِ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ، قَالَ: ((إِنَّ مِنْ حُسْنِ الصَّلَاةِ إِقَامَةُ الصَّفِّ)) .
With this same chain, the Messenger of Allah, peace and blessings be upon him, said: "The straightening of the rows is part of the perfection of prayer."
