What is the determination for liquids such as milk and oils?

Primary text

Milk and other liquids, such as fats like olive oil and sesame oil (*shīraj*), honey, vinegar, molasses (*dibs*), and the like, are apparently determined by measure. It is valid to enter into a forward contract (*salam*) for milk by measure. Furthermore, water is quantified by the *sa'* and the *mudd*, as evidenced by the Prophet, peace be upon him, using the *mudd* for ablution and the *sa'* for full ritual bathing, establishing these as measures for water and subsequently other liquids.