(a) In another chain it is narrated from Muhammad bin Amr bin Ata that he was sitting in a group of the noble Companions of the Messenger of Allah (peace and blessings be upon him) (may Allah be pleased with them), and then he mentioned the complete hadith.
(b) Imam al-Bayhaqi (may Allah have mercy on him) said: Imam al-Bukhari (may Allah have mercy on him) says (in his narration) that he pointed the tips of his toes towards the qiblah; then when he sat after two rak'ahs, he sat on his left leg and kept his right foot upright; and when he sat in the final sitting, he laid his left foot down, kept his right foot upright and sat on his buttocks.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2771