[Machine] Abu Al-Muwajjah narrated to Anban, who narrated from Abdullah, who narrated from Abdullah bin Al-Rahman Al-Mas'oodi, who informed me that Abu Sinan narrated from Ubaidullah bin Abi Raafie, who narrated from Ali bin Abi Talib, that he was asked about the saying of Allah, "Those who are humble in their prayers" [Quran 23:2]. He said: humility in the heart and softening your shoulder for the Muslim person, and not looking around during your prayer.  

ثنا أَبُو الْمُوَجِّهِ أنبأ عَبْدَانُ أنبأ عَبْدُ اللهِ أنبأ عَبْدُ الرَّحْمَنِ الْمَسْعُودِيُّ أَخْبَرَنِي أَبُو سِنَانٍ عَنْ عُبَيْدِ اللهِ بْنِ أَبِي رَافِعٍ عَنْ عَلِيِّ بْنِ أَبِي طَالِبٍ ؓ أَنَّهُ سُئِلَ عَنْ قَوْلِ اللهِ ﷻ {الَّذِينَ هُمْ فِي صَلَاتِهِمْ خَاشِعُونَ} [المؤمنون 2] قَالَ الْخُشُوعُ فِي الْقَلْبِ وَأَنْ تُلِينَ كَتِفَكَ لِلْمَرْءِ الْمُسْلِمِ وَأَنْ لَا تَلْتَفِتَ فِي صَلَاتِكَ