That the Prophet ﷺ said: "Whoever purchased an animal that has not been milked, then he the choice when he milks it, if he wishes he may return it, returning a Sa' of dried dates along with it." (Using translation from Tirmidhī 1251)
عَنِ النَّبِيِّ ﷺ مَنْ اشْتَرَى شَاةً مُصَرَّاةً فَهُوَ بِالْخِيَارِ إِنْ شَاءَ رَدَّهَا وَمَعَهَا صَاعٌ مِنْ تَمْرٍ