حَدَّثَنَا أَبُو كَامِلٍ، حَدَّثَنَا عَبْدُ الْوَاحِدِ، حَدَّثَنَا صَدَقَةُ بْنُ سَعِيدٍ، عَنْ جُمَيْعِ بْنِ عُمَيْرٍ التَّيْمِيِّ، قَالَ سَمِعْتُ عَبْدَ اللَّهِ بْنَ عُمَرَ، يَقُولُ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ مَنِ ابْتَاعَ مُحَفَّلَةً فَهُوَ بِالْخِيَارِ ثَلاَثَةَ أَيَّامٍ فَإِنْ رَدَّهَا رَدَّ مَعَهَا مِثْلَ أَوْ مِثْلَىْ لَبَنِهَا قَمْحًا ‏"‏ ‏.‏

Narrated Abdullah ibn Umar: The Prophet (PBUH) said: If anyone buys a sheep whose udders have been tied up, he has option for three days (for decision). If he returns it, he should return with it wheat equal to its milk or double of it. Translation Not Available

Book Ref: Sunan Abi Dawud Book 24 Hadith 3446
Web Ref:  Sunan Abi Dawud Book 23 Hadith 3439