والسمسم بالشيرج
Translation: The same restriction concerns sesame seeds exchanged for sesame oil.
Simsim is sesame seed; shiraj is extracted sesame oil. Quduri links this with the olive case because the proposed barter again places oil inside a raw commodity against extracted oil.
For example, if the embedded oil is reliably found to be 2 kg and 3 kg of extracted sesame oil are offered, 2 kg are matched against the oil and 1 kg against the residual press-cake. Without credible knowledge of the embedded content, hoping it is smaller is not sufficient.