The Arabic original of the ninth-century Kitāb al-Nawāmīs has not been discovered, save for three incomplete chapters. We have access to a fuller version only through a Latin translation, often known as the Liber vaccae, a title derived from its notorious experiments which involve the gruesome slaughter and mutilation of a cow to magically produce a rational animal or bees. Recent research on the Liber vaccae has focused mostly on its reception in medieval and early modern Europe. By contrast, the (...) present article explores the Indo-Arabic tradition to which Kitāb al-Nawāmīs belongs, as a re-orientation of the Liber vaccae established on two levels: textual and theoretical. Section I, on 'Texts and Practices', introduces ʿUyūn al-ḥaqāʾiq of Abū al-Qāsim al-ʿIrāqī, a text on magical practices which contains 26 chapters that correspond to sections in the Liber vaccae, affording us a glance into the Arabic reception of Kitāb al-Nawāmīs and bringing us closer to the Arabic original. The textual connection is established further by highlighting parallels between the experiments of the Liber vaccae / Kitāb al-Nawāmīs and other texts on natural magic, namely Ghāyat al-ḥakīm of Maslama al-Qurṭubī and Kitāb al-Sumūm by Ibn Waḥshiyya. Section II investigates the theoretical bases of the Liber vaccae / Kitāb al-Nawāmīs, by associating its content with the theories of spontaneous and artificial generation in Kitāb al-Tajmīʿ attributed to Jābir ibn Hayyān, Ghāyat al-ḥakīm, Kitāb al-Sumūm and, finally, another work by Ibn Waḥshiyya, al-Filāḥa al-nabaṭiyya. Jābir's and al-Qurṭubī's works have been studied in relation to the Liber vaccae by David Pingree, Maaike Van der Lugt, Sophie Page and William Newman; their findings are re-evaluated here in light of the texts of Ibn Waḥshiyya and al-ʿIrāqī. (shrink)