That the Prophet (ﷺ) said: "Whoever buys food, then he is not to sell it until he takes possession of it." Ibn 'Abbas said: "All things are considered the same (in this regard)."

There are narrations on this topic from Jabir, Ibn 'Umar, and Abu Hurairah.

The Hadith of Ibn 'Abbas is a Hasan Sahih Hadith.

Jami` at-Tirmidhi Book 14, Hadith 93