Authentic
graded by Salim al-Hilali
Companion’s words (mawquf) Muwatta Malik 396
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ نَافِعٍ، أَنَّ ابْنَ عُمَرَ، لَمْ يَكُنْ يَلْتَفِتُ فِي صَلاَتِهِ .
Yahya related to me from Malik from Nafi that Ibn Umar would never turn around when praying.
Reported by Malik (No. 396).