Volume 3, Book 31, Number 213:
Narrated Abu Huraira:
Two fasts and two kinds of sale are forbidden: fasting on the day of ‘Id ul Fitr and ‘Id-ul-Adha and
the kinds of sale called Mulamasa and Munabadha. (These two kinds of sale used to be practiced in
the days of Pre-lslamic period of ignorance; Mulamasa means when you touch something displayed
for sale you have to buy it; Munabadha means when the seller throws something to you, you have to
buy it.)