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‘Abdallah b. Mas'ud said, “None of you must give the devil any place in his prayer, thinking it is his duty when he leaves to turn only to his right. I have often seen God’s Messenger turning to his left when he went away.” (Bukhari and Muslim.)
Source: sunnah.com
Other translations
Arabic
وَعَنْ عَبْدِ اللَّهِ بْنِ مَسْعُودٍ قَالَ: لَا يَجْعَلْ أَحَدُكُمْ لِلشَّيْطَانِ شَيْئًا مِنْ صَلَاتِهِ يَرَى أَنَّ حَقًّا عَلَيْهِ أَنْ لَا يَنْصَرِفَ إِلَّا عَنْ يَمِينِهِ لَقَدْ رَأَيْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ كَثِيرًا يَنْصَرِفُ عَن يسَاره
sunnah.com