The Prophet ﷺ 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.

قَالَ رَسُولُ اللَّهِ ﷺ مَنِ ابْتَاعَ مُحَفَّلَةً فَهُوَ بِالْخِيَارِ ثَلاَثَةَ أَيَّامٍ فَإِنْ رَدَّهَا رَدَّ مَعَهَا مِثْلَ أَوْ مِثْلَىْ لَبَنِهَا قَمْحًا