Musannaf Ibn Abi Shaybah 30920 — What they said on a sorcerer: what

Nafi' reports that Sayyiduna Ibn Umar (may Allah be pleased with them both) said: A slave girl of Sayyidah Hafsah (may Allah be pleased with her) cast a spell on her, and the people found her sorcery, and she also confessed. Sayyidah Hafsah ordered Abd al-Rahman bin Zayd, and he killed her. When this news reached Sayyiduna Uthman (may Allah be pleased with him), he did not approve of it and expressed anger over it. So Sayyiduna Ibn Umar (may Allah be pleased with them both) came to him and informed him that she had cast a spell on her, that the people had also found her sorcery, and that the sorceress had also confessed to it. So it was as though Sayyiduna Uthman disliked it because she had been killed without his permission.