Sahih al-Bukhari 1993
Sahih al-Bukhari · Book 30: Fasting · Observing Saum on the first day of 'Eid-ul-Adha.
Narrated Abu Huraira:
حَدَّثَنَا إِبْرَاهِيمُ بْنُ مُوسَى ، أَخْبَرَنَا هِشَامٌ ، عَنِ ابْنِ جُرَيْجٍ ، قَالَ أَخْبَرَنِي عَمْرُو بْنُ دِينَارٍ ، عَنْ عَطَاءِ بْنِ مِينَا ، قَالَ سَمِعْتُهُ يُحَدِّثُ، عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ قَالَ يُنْهَى عَنْ صِيَامَيْنِ، وَبَيْعَتَيْنِ الْفِطْرِ، وَالنَّحْرِ،، وَالْمُلاَمَسَةِ، وَالْمُنَابَذَةِ،.
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-Islamic 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.)