Musannaf Ibn Abi Shaybah

Hazrat Abdullah bin Abi Bakr narrates that I heard Aban bin Uthman and Hisham bin Ismail teaching about the option (of defect) regarding a slave, that for fever and stomach (illness) there is an option of three days, and for insanity and leprosy there is an option of one year. And the statement of (Imam) Abu Hanifa is mentioned that: When the two contracting parties separate, then they no longer have the option to reject the sold item without a defect.