Abu Salamah bin Abdur Rahman narrates from Sayyiduna Abu Hurairah (may Allah be pleased with him) that when the Messenger of Allah (peace and blessings be upon him) said that one’s illness does not transfer to another, and there is no reality in Safar and Haamah, a Bedouin said,“O Messenger of Allah! What about the camels? They are as clean as deer in the sand, then a mangy camel comes among them and makes all of them mangy?”The Prophet (peace and blessings be upon him) said,“Then who made the first camel mangy?”In another narration, the Noble Prophet (peace and blessings be upon him) said,“There is no contagion, no bad omen, no Safar, and no Haamah.”(By contagion is meant the transference of disease from one to another, by bad omen is meant taking ill fortune from something, by Safar is meant considering the month of Safar as unlucky, as some people still do today, and by Haamah is meant the owl, which the Arabs considered unlucky.)

It is narrated from Ibn Shihab that Sayyiduna Abu Salamah bin Abdur Rahman bin Awf (may Allah be pleased with him) reported to him that the Messenger of Allah (peace and blessings of Allah be upon him) said: "One's illness does not infect another." (This means that no illness is transmitted by itself; if it affects anyone else, it is by Allah's command. That is why it has been ordered not to bring a sick camel near a healthy camel.) And Abu Salamah also narrated this hadith that the Messenger of Allah (peace and blessings of Allah be upon him) said: "A sick camel should not be brought near healthy camels." Abu Salamah said that Sayyiduna Abu Hurairah (may Allah be pleased with him) used to narrate both these ahadith from the Messenger of Allah (peace and blessings of Allah be upon him), but afterwards he stopped narrating the hadith that "illness is not contagious" and continued to narrate that "a sick camel should not be brought near a healthy camel." Harith bin Abi Dhibab, who was a cousin of Sayyiduna Abu Hurairah (may Allah be pleased with him), said to him: "O Abu Hurairah! You used to narrate another hadith along with this one, but now you do not narrate it. That hadith is that the Messenger of Allah (peace and blessings of Allah be upon him) said: 'One's illness does not infect another.'" Sayyiduna Abu Hurairah (may Allah be pleased with him) denied it and said: "I do not recognize this hadith, but the Prophet (peace and blessings of Allah be upon him) did say that a sick camel should not be brought near a healthy camel." Harith argued with him to such an extent that Sayyiduna Abu Hurairah (may Allah be pleased with him) became angry and said something in the Abyssinian language. Then he asked Harith: "Do you understand what I said?" Harith replied: "No." Sayyiduna Abu Hurairah (may Allah be pleased with him) said: "I just said that I refuse to narrate this hadith." Abu Salamah said: "By my life! Sayyiduna Abu Hurairah (may Allah be pleased with him) used to narrate to us this hadith that the Messenger of Allah (peace and blessings of Allah be upon him) said: 'One's illness does not infect another.' Then I do not know whether Abu Hurairah forgot this hadith or considered one hadith to have abrogated the other." (In Sahih Bukhari, there is no mention of abrogation, rather it is only stated that we have not seen Abu Hurairah (may Allah be pleased with him) forget any hadith except this one.)

Narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) said: Neither does one’s illness infect another, nor is there any reality in Haamah, nor in Naw’, nor in Safar. (Naw’ refers to the rising and setting of stars, as was the belief of the Arabs and is also the belief of today’s astrologers, that rain occurs due to a certain star, etc.)

Sayyiduna Jabir (may Allah be pleased with him) reports that the Messenger of Allah (peace and blessings be upon him) said: "No illness is contagious from one person to another, there is no bad omen in anything, and there are no such things as ghouls." (By ghouls is meant the common belief that there are devils in the wilderness who shine like lamps at night, sometimes guiding people and sometimes killing them.)

'Sayyiduna Shuraid (may Allah be pleased with him) says that' there was a leprous person among the people of Thaqif. The Messenger of Allah (peace and blessings of Allah be upon him) sent word to him saying that we have accepted your pledge, so you may return.

`Sayyiduna Abu Hurairah (may Allah be pleased with him) says that I heard the Messenger of Allah (peace and blessings of Allah be upon him) say: There is no such thing as bad omen (i.e., considering someone unlucky), and the best omen is a good one. The people asked, "O Messenger of Allah! What is a good omen?" He (peace and blessings of Allah be upon him) said: It is the good word that one of you hears.

`Sayyiduna Ibn Umar (may Allah be pleased with them) narrates from the Noble Prophet (peace and blessings of Allah be upon him) that he (peace be upon him) said: If there were to be any bad omen, it would be in the horse, the woman, and the house.

Narrated by Sayyiduna Jabir bin Abdullah (may Allah be pleased with him) from the Messenger of Allah (peace and blessings of Allah be upon him) that he (peace be upon him) said: If (misfortune) is in anything, then it is in the house, the servant, and the horse.