Muwatta MalikChapter 9Hadith 375
Full Sharh — Muwatta Malik 375
Mauquf Sahih
حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ نَافِعٍ، أَنَّ عُمَرَ بْنَ الْخَطَّابِ، كَانَ يَأْمُرُ بِتَسْوِيَةِ الصُّفُوفِ فَإِذَا جَاءُوهُ فَأَخْبَرُوهُ أَنْ قَدِ اسْتَوَتْ كَبَّرَ .
English Translation
Yahya related to me from Malik from Nafi that Umar ibn al-Khattab used to order the rows to be straightened, and when they had come to him and told him that the rows were straight he would say the takbir
Source
Muwatta Malik(موطأ مالك)
Shortening the Prayer
Hadith Number
375
Grade
Mauquf Sahih