Is the Hadith about killing snakes and scorpions authentic or not?

The specific hadith was not mentioned in the question, but numerous hadiths have been authenticated that command the killing of snakes and scorpions, including:

The hadith of Ibn Umar: "Kill snakes, and kill the one with two stripes (Dhul-Tufyatayn) and the short-tailed one (Al-Abtar), for they cause miscarriage and blind the eyes." It was also reported that killing house snakes was later forbidden. And the saying of the Prophet, peace and blessings be upon him: "Kill the two black ones during prayer: the snake and the scorpion."