بسم الله الرحمن الرحيم
The prophet (ﷺ) said:
أَنَّ اللَّهَ وَمَلَائِكَتَهُ يُصَلُّونَ عَلَى مَيَامِنِ الصُّفُوفِ
Verily, Allāh and His angels send blessings upon those on the right side of the prayer rows.
(Declared Hasan by Ibn Hajr in al-Fath 2/213 and Al-Arnā’ūt in Sahīh Ibn Hibbān 5/534)
Al-Barā said:
كُنَّا إِذَا صَلَّيْنَا خَلْفَ النَّبِيِّ ﷺ أَحْبَبْنَا أَنْ نَكُونَ عَنْ يَمِينِهِ
When we prayed behind the Messenger of Allāh (ﷺ) we liked to be on his right side.
(Abū Dawūd 615. Declared Sahīh by Ibn Hajr in al-Fath 2/213 and Al-Arnā’ūt in Sharh as-Sunnah 2/200)
Ibrāhīm al-Nakha’ī (d.95H) said: It is recommended (to pray) on the right side of the imām. (Musanaf Ibn Abī Shaybah #3458)
Shaykh Ibn Bāz said: ‘Allāh and His angels send blessings upon those on the right side of the prayer rows’: this indicates that the right side is better and is more virtuous than the left.
Whilst noting that the right side of the row is better than the left, it is obligatory to complete the rows before beginning a new row. Thus, one fills the right and left side of the first row before starting onto the second row, and so on. (Summarised, Sharh Riyād al-Sālihīn #1094)
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