(a) Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) narrates: None of you should leave any part of his prayer for Satan, that is, by turning away only to the right (rather, he should turn to the left as well).
I have seen the Messenger of Allah (peace and blessings be upon him) many times turning away to the left (too).
(b) These are the words of the hadith of Shu'bah (may Allah have mercy on him). In the hadith of Abu Usamah (may Allah have mercy on him), "juz'an" (a part) appears in place of "nasiban" (a share), and "'an shimalihi" appears in place of "'an yasarihi" (both meaning: to his left).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3610
(a) Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) said: None of you should leave any share of his prayer for Satan, that is, by turning away only to the right; rather, he should turn to the left as well. I have seen the Messenger of Allah (peace and blessings be upon him) many times turning away from the left side.
(b) Umarah (may Allah have mercy on him) narrates: After hearing this hadith I came to Madinah and saw the dwellings of the Prophet (peace and blessings be upon him); they were on his left side.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3611
Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrates: I saw the Messenger of Allah (peace and blessings be upon him) praying barefoot and wearing sandals, standing and sitting, and he would turn away both to his right and to his left.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3612
(a) Qabisah bin Hulb narrates from his father (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) would sometimes turn away from the prayer to his right and sometimes to his left, and he would place one of his hands on the other.
(b) Imam al-Shafi'i (may Allah have mercy on him) said: If the one praying has no need in a particular direction and may turn whichever way he wishes, I prefer that he turn to his right, because the Prophet (peace and blessings be upon him) loved to favour the right; yet he is not put under any constraint in any of that.
(c) Imam al-Bayhaqi (may Allah have mercy on him) said: The report of Sayyidah Aishah (may Allah be pleased with her) has already passed, that the Prophet (peace and blessings be upon him) loved to favour the right in all his affairs.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3613
Sayyiduna Anas bin Malik (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) used to turn away from the prayer to his right.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3614
Al-Suddi said: I asked Sayyiduna Anas bin Malik (may Allah be pleased with him): When I have finished praying, which way should I turn, to my right or to my left? He said: I have mostly seen the Messenger of Allah (peace and blessings be upon him) turn to his right.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3615