بُلُوغُ الْمَرَامِ
Bulugh al-Maram 244
Kitabu cha Swala
وَلِلتِّرْمِذِيِّ : عَنْ أَنَسٍ - وَصَحَّحَهُ - { إِيَّاكَ وَالِالْتِفَاتَ فِي اَلصَّلَاةِ , فَإِنَّهُ هَلَكَةٌ , فَإِنْ كَانَ فَلَا بُدَّ فَفِي اَلتَّطَوُّعِ } [1]
at-Tirmidhi has reported and graded as Sahih (authentic) the narration of Anas (RA): "Avoid looking around when you are engaged in prayer, for looking around is destruction. And if you must do it, do so in the voluntary prayers."
Tafsiri ya Kiswahili ya hadithi hii bado haipatikani — inaonyeshwa kwa Kiingereza.
Sunnah.com reference: Book 2, Hadith 113