ßÊÇÈ ÇáÈíæÚ : Hadeeth No:1982 : Ibn 'Umar:
The Prophet said, "The buyer and the seller have the option to cancel
or confirm the bargain before they separate from each other or if the
sale is optional." Nafi said, "Ibn 'Umar used to separate quickly
from the seller if he had bought a thing which he liked."...