Hazrat Abu Huraira (may Allah be pleased with him) narrated that the Messenger of Allah (peace and blessings be upon him) said: No person should take his sick camels to the healthy camels of another.

Hazrat Anas bin Malik (may Allah be pleased with him) narrated that the Prophet Muhammad (peace and blessings be upon him) said: "There is no such thing as contagion and no evil omen, but I like a good omen." The companions (may Allah be pleased with them) asked, "What is a good omen?" The Prophet replied, "A good word spoken or heard from someone."

Hazrat Abu Huraira (may Allah be pleased with him) narrated that I heard the Messenger of Allah (peace and blessings of Allah be upon him) say: "There is no reality in bad omens, but taking a good omen is not objectionable." The companions (may Allah be pleased with them) asked, "What is a good omen?" He replied, "A good word that any one of you hears."

Hazrat Ibn Umar (may Allah be pleased with them both) narrated that the Messenger of Allah (peace and blessings be upon him) said: There is no reality in contagiousness of diseases and bad omens, and if there were any ill-omen, it would be in three things: a woman, a house, and a horse.

Hazrat Sahl bin Sa’d Sa’idi (may Allah be pleased with him) narrated that the Messenger of Allah (peace and blessings be upon him) said: If there were to be any ill-omen, it would be in the horse, the woman, and the house.

Narrated Ibn Umar (may Allah be pleased with them): I heard the Prophet (peace and blessings of Allah be upon him) saying while delivering a sermon on the pulpit: "Kill snakes, especially those which have two spots on their heads and the snake with a cut tail, for both of them cause blindness and miscarriage." Abdullah bin Umar (may Allah be pleased with them) said: Once I was trying to kill a snake when Abu Lubabah (may Allah be pleased with him) called out to me not to kill it. I said, "The Messenger of Allah (peace and blessings of Allah be upon him) ordered us to kill snakes." He informed me that later the Prophet (peace and blessings of Allah be upon him) forbade killing the snakes that live in houses, as they are jinn, from being killed suddenly. And in another narration, it is mentioned that Abu Lubabah (may Allah be pleased with him) saw me, or my uncle Zayd bin Khattab (may Allah be pleased with him) did.

Hazrat Abdullah bin Mas'ud (may Allah be pleased with him) narrated that we were with the Messenger of Allah (peace and blessings be upon him) when Surah "Al-Mursalat" was revealed to him, and we were learning it from his blessed mouth. Meanwhile, a snake appeared. We moved forward to kill it, but it escaped and entered its hole. Upon this, the Messenger of Allah (peace and blessings be upon him) said: "It has been saved from your harm, and you have been saved from its harm."

Hazrat Umm Sharik (may Allah be pleased with her) narrated that the Prophet Muhammad (peace and blessings be upon him) ordered the killing of the gecko.

The purified wife of the Noble Prophet (peace and blessings of Allah be upon him), Hazrat Aisha (may Allah be pleased with her), narrated that the Messenger of Allah (peace and blessings of Allah be upon him) called the lizard harmful, but I did not hear from him that he ordered it to be killed.

Hazrat Abu Huraira (may Allah be pleased with him) narrated that I heard the Messenger of Allah (peace and blessings be upon him) saying: A prophet (either Uzair or Musa, peace be upon them) was bitten by an ant, so he ordered that the entire colony of ants be burned. Upon this, Allah the Exalted sent revelation to him: "Because one ant bit you, you have destroyed a whole community that glorified Allah."