﴿47﴾ قَالُوا اطَّيَّرْنَا بِكَ وَبِمَن مَّعَكَ قَالَ طَآئِرُكُمْ عِندَ اللَّهِ بَلْ أَنتُمْ قَوْمٌ تُفْتَنُونَ
47. “ They said: ‘Ill omen do we augur from you and those with you’. He said: ‘Your ill omen is with Allah. Nay! You are a people who are being tried’.”
The Arabic word /tatayyur/ is derived from /tayr/ which means ‘a bird’. Some of Arabs used to leave a bird at the time when they wanted to travel. If it went to the right direction they would start their traveling, and if it flew to the left (they augured ill and) they would suspend their traveling. In Islam auguring ill has been considered disbelief. To augur ill leads to leaving the main reasons and going toward superstitions.
There are many occurrences in the Qur’ān which indicate that the Divine prophets had been augured ill. The people of Pharaoh thought that their afflictions had come because of Moses (a.s.). The Qur’ān says: “…and if any evil afflicted them, they took it bad omens due to Moses …” Jesus (a.s.) was told: “… For us, we augur an evil omen from you …” In the above mentioned verse, the disbelievers told Sāleh: “… ‘Ill omen do we augur from you and those with you’. …”
However, this arrogant nation, instead of listening to the sympathetic advice of their great prophet and applying it, they
Tafsīr-ul-Kashshāf  SuraAl-'A'rāf, No. 7, verse 131  Sura Yāsīn, No. 36, verse 18
opposed him with some vain words and baseless conclusions, among them is their following statement:
with you’. …”
It seems that there was drought, and deficiency of crop and foodstuff for the people of Moses in that year. They said that all those afflictions and difficulties were because of unpleasant advent of Moses and his followers who brought them and their society misery and omen. By resorting to the weapon of ill omen, which is often the weapon of arrogant and superstitious persons, they wanted to overcome the strong logic of Moses (a.s.). But in answer to them, he said that their evil fortune was with Allah, and it was their own deeds that resulted such miseries and as punishments. In fact, this was a great Divine trial for them.
The verse continues saying:
people who are being tried’.”
These are some Divine trials. They are some warnings and awakening subjects for those who have some suitability and competency to awake from the sleep of negligence and, by going to the path of Allah, improve themselves.
There are also some people in some societies who do not believe in Allah, although they have earned some considerable good grades in knowledge and science but, in the meantime, they have some superstitions and similar vain beliefs in them and they still have a warm market for fortune-telling and soothsaying among them, so that the illusive subject of luck and horoscopy has many customers.
But the Qur’ān through a short sentence says: “Your ill omen is with Allah.” This means your luck, your victory, your defeat, and your success and failure all are with Allah, Who is Wise, and His favours are divided among men according to their competencies, those very competencies which are the reflection of their Faith, action, speech and behaviour.
Thus, the Qur’ān drives out the followers of Islam from the valley of superstition to reality and from devious way toward straight Path.
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Some Traditions Upon Bad Omen:
1. The Messenger of Allah (p.b.u.h.) said: “The atonement of ill omen is reliance in Allah.”
2. The Messenger of Allah (p.b.u.h.) said: “Ill omen is infidelity and it is not from us, but reliance in Allah abolishes it.”
3. There has been narrated that, in supplication, the Prophet (p.b.u.h.) used to say: “O Allah! There is no omen but Your omen, no goodness but Your goodness, and no god but You (Allah). O Allah! No one gives rewards but You, and no one wipes the faults but You, and there is no power except in Allah, the Exalted, the Great.”
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 Nahaj by Ibn-Abil-Hadīd, Vol. 20, P. 283 Sunan-i-Ibn-Mājid, Vol. 2, P. 1170; and Sunan-i-'Abī Dawūd, Vol.2, P. 344 Safīnah, Vol. 2, P. 102