<p style='text-align: justify;'>Recto: magical prescription for the establishment of the celestial sphere, mentioning substances such as ammonia, white alum and zubd al-baḥr (possibly ‘mercury’). Verso: draft of a halakhic question sent to Joseph Roš ha-Seder (page is crossed out). A man gives half a house (which actually belongs to his wife) as pledge for a debt of 8 dinars, and after the man dies the creditor demands the money from the widow. C. 1180 CE. </p>