بسم الله الرحمن الرحيم
Q: Is it permissible to consume blood extracted from a human whether it be from a wound or cupping, as it is affirmed that a companion consumed the blood of the messenger -sallahu alayhi wa salaam- from cupping?
A: Allah says:
إنَّما حرّم عليكم الميتة و الدم و لحم الخنزير و ما أُهِلَّ به لغير الله
“He has only made prohibited for you (to consume) dead animals, blood, the flesh of swine, and the slaughtered as a sacrifice to other than Allah…” [Al-Baqara: 172]
Blood is forbidden. I have doubt regarding the authenticity of the story of Ibn Zubair drinking the blood of the Messenger -sallahu alayhi wa salaam and I will research it if Allah wills. Moreover The Messenger’s status is not like any other besides him, may Allah bless you. As for the consuming of blood it is forbidden, and the blood of the prophets has the utmost of sanctity.
Translated by Najeeb Al Anjelesi
Source: فتاوى فضيلة الشيخ العلامة ربيع ن هادي عمير المدخلي