Abu Ubaydah narrates: Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) would not turn fully around in the prayer (when concluding with the salam); if his need lay to his right, he would turn away to his right, and if it lay to his left, he would turn away to his left.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 9302