مُسْنَدُ أَحْمَدَ
Musnad Ahmad 1544
Musnad Abu Ishaq Sa'd bin Abi Waqqas
It was narrated that Zaid Abu Ayyash said: Sa"d was asked about selling wheat for thin husked barley. He disliked it and said: I heard the Prophet (ﷺ) being asked about selling fresh dates for dried dates and he said: "Does it shrink when it is dried?" They said: Yes. He said: "Then no."
Musnad Ahmad 1544Qawi (Darussalam)]