Hadith 958:3
Yahya ibn Sa'id narrated to us, from Sufyan, Simak narrated to me, from Qabisah ibn Hulb, from his father, who said: "I saw the Prophet, peace and blessings of Allah be upon him, turning away from his right and from his left, and I saw him," he said, "placing this upon his chest." Yahya described: The right hand upon the left, above the joint.
حدثنا يحيى بن سعيد، عن سفيان، حدثني سماك، عن قبيصة بن هلب، عن أبيه، قال: " رأيت النبي صلى الله عليه وسلم ينصرف عن يمينه وعن يساره، ورأيته، قال، يضع هذه على صدره " وصف يحيى: اليمنى على اليسرى فوق المفصل