وَعَنْ عَائِشَةَ رَضِيَ اللَّهُ عَنْهَا قَالَتْ: سَأَلَتْ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ عَنِ الِالْتِفَاتِ فِي الصَّلَاةِ فَقَالَ: «هُوَ اختلاس يختلسه الشَّيْطَان من صَلَاة العَبْد»
I asked God’s Messenger about looking to the side during prayer and he said, “It is something which the devil snatches from a servant’s prayer.” (Bukhari and Muslim.)
Source: Mishkat al-Masabih — repository translation · Al-Khatib Al-Tabrizi — authenticity/grade metadata requires independent source review · Sunnah.comAudio not available for the selected reciter.
Source: Mishkat al-Masabih — repository arabic · Al-Khatib Al-Tabrizi · Sunnah.com