Sahih Muslim Book - 21, Hadith - 3833

حَدَّثَنَا ابْنُ أَبِى عُمَرَ حَدَّثَنَا سُفْيَانُ عَنْ أَيُّوبَ عَنْ مُحَمَّدٍ عَنْ أَبِى هُرَيْرَةَ قَالَ قَالَ رَسُولُ اللَّهِ -صلى الله عليه وسلم- « مَنِ اشْتَرَى شَاةً مُصَرَّاةً فَهُوَ بِخَيْرِ النَّظَرَيْنِ إِنْ شَاءَ أَمْسَكَهَا وَإِنْ شَاءَ رَدَّهَا وَصَاعًا مِنْ تَمْرٍ لاَ سَمْرَاءَ ».

It was narrated that Abu Hurairah said: "The Messenger of Allah (s.a.w) said: 'Whoever buys a sheep in whose udder milk has been allowed to accumulate has the choice of two things: If he wishes he may keep it, and if he wishes he may return it, along with a Sa' of dates, but not wheat."'