وَإِنْ كَانَ لَهَا لَبَنٌ لَمْ يَحْلِبْهَا، وَلَكِنْ يَنْضَحُ ضَرْعَهَا بِالْمَاءِ الْبَارِدِ حَتَّى يَنْقَطِعَ اللَّبَنُ.
Translation: If it has milk, he should not milk it; the text prescribes sprinkling the udder with cool water until the flow ceases.
Ḍar‘ means udder and yanḍaḥ means sprinkling water.
This describes a traditional ruling and husbandry practice in the classical text. Modern animal welfare and veterinary considerations should be observed if the animal faces distress or illness; it should not be extrapolated to ordinary dairy livestock.