The straightening of the rows is amongst those obligatory and good things which make your As-Salat (the prayer) a correct and perfect one.
باب إِقَامَةِ الصَّفِّ مِنْ تَمَامِ الصَّلاَةِ
1459
Sahih Bukhari
Sahih
حَدَّثَنَا أَحْمَدُ بْنُ يُونُسَ، حَدَّثَنَا اللَّيْثُ، عَنْ نَافِعٍ، أَنَّ عَبْدَ اللَّهِ، قَالَ أَمَرَ النَّبِيُّ صلى الله عليه وسلم بِزَكَاةِ الْفِطْرِ، صَاعًا مِنْ تَمْرٍ، أَوْ صَاعًا مِنْ شَعِيرٍ. قَالَ عَبْدُ اللَّهِ ـ رضى الله عنه ـ فَجَعَلَ النَّاسُ عِدْلَهُ مُدَّيْنِ مِنْ حِنْطَةٍ.
Narrated `Abdullah bin `Umar:
The Prophet (ﷺ) ordered (Muslims) to give one Sa' of dates or one Sa' of barley as Zakat-ul-Fitr. The people rewarded two Mudds of wheat as equal to that.
Reference: Sahih al-Bukhari 1507 In-book : Book 24, Hadith 108 USC-MSA web (English) : Vol. 2, Book 25, Hadith 583 (deprecated)
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