Sahih Muslim , Book 10, Hadith 3636 (USC-MSA) ⓘ
Abu Huraira (Allah be pleased with him) reported Allah's Apostle as saying: lie who buys a goat having its udder tied up has the option to return it within three days. If he returns it he should pay a sa' of dates. Wheat is not essential.
حَدَّثَنَا مُحَمَّدُ بْنُ عَمْرِو بْنِ جَبَلَةَ بْنِ أَبِي رَوَّادٍ، حَدَّثَنَا أَبُو عَامِرٍ، - يَعْنِي الْعَقَدِيَّ - حَدَّثَنَا قُرَّةُ، عَنْ مُحَمَّدٍ، عَنْ أَبِي هُرَيْرَةَ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " مَنِ اشْتَرَى شَاةً مُصَرَّاةً فَهُوَ بِالْخِيَارِ ثَلاَثَةَ أَيَّامٍ فَإِنْ رَدَّهَا رَدَّ مَعَهَا صَاعًا مِنْ طَعَامٍ لاَ سَمْرَاءَ " .
also referenced under: Book 21, Hadith 32 (In-Book) & Hadith 1524 (Reference)