The Book of Financial Transactions
44/14. Chapter:
Prohibition Of (Selling) al-Musarrah, and It Is To Bind The Udders Of the Camel Or The Sheep, And To Avoid Milking Them For Two Or Three Days, Until the Milk Gathers In Them, Increasing The Profits Of The Sale When It Is Seen That It Has A Great Amount Of Milk
Sunan an-Nasai
أَخْبَرَنَا مُحَمَّدُ بْنُ مَنْصُورٍ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ أَبِي الزِّنَادِ، عَنِ الأَعْرَجِ، عَنْ أَبِي هُرَيْرَةَ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " لاَ تَلَقُّوا الرُّكْبَانَ لِلْبَيْعِ وَلاَ تُصَرُّوا الإِبِلَ وَالْغَنَمَ مَنِ ابْتَاعَ مِنْ ذَلِكَ شَيْئًا فَهُوَ بِخَيْرِ النَّظَرَيْنِ فَإِنْ شَاءَ أَمْسَكَهَا وَإِنْ شَاءَ أَنْ يَرُدَّهَا رَدَّهَا وَمَعَهَا صَاعُ تَمْرٍ " .
It was narrated from Abu Hurairah that the Prophet said: "Do not go out to meet the riders, and do not bind the udders of camels and seep. Whoever has boughty anything in that manner has two choices: If he whishes he may keep it, or if he wants to return it he may return it, along with a Sa of dates." (Sahih )
Reference : Sunan an-Nasa'i 4487In-book reference : Book 44, Hadith 39English translation : Vol. 5, Book 44, Hadith 4492