The meaning of the beneficial, refuging and saving blood-letting

1. My father, may Allah grant him mercy, said: We were told by Sa’d bin Abdullah, from Ahmad bin Abi Abdillah, that he ascribed it to Abu Abdillah, Ja’far bin Muhammed, from his father, peace be upon them both, that he said

2. With this chain of narrators, from Ahmad bin Abi Abdillah, from Hasan bin Ali, from Ahmad bin ‘A’idh, from Ibn Salama, and he is Abu Khadija, and his name is Salem bin Makram, from Abu Abdillah, peace be upon him, that he said: Blood-letting on the head is performed by a shibr [1] from the tip of the nose (vertically) and a fitr [2] between the eyebrows. The Messenger of Allah, Allah’s blessings be upon him and his Family, used to call it the saving. In another narration, he said