A superstition is a belief as a result of ignorance, worry of the unknown, trust in magic or chance, or a fake idea of causation or an irrational abject attitude of thoughts towards the supernatural, nature, or God on account of superstition.
Superstitious beliefs were shown to help promote an excellent intellectual mindset. However, they can result in irrational decisions, which include trusting in the merits of exact good fortune and destiny rather than sound decision making. Duttada's wife, brother, and relatives from the lesson "The Comet II" were the finest examples of superstitious believers, believing that a comet might be controlled by a yajna.
Even if beliefs have shown variation from person to person, they have also some common aspects. Superstitions which we were able to collate are listed hereunder:
One cannot eat meal by putting his one foot over another, it means disrespect to the table and it is considered as the sign of famine. 
A mirror which is broken may bring bad luck; it is said,  house where mirror was broken cannot get well for a period of seven years.
When a black cat passes in front of a man, it is considered as ill-omen.
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Some of the familiar superstitious beliefs are,
1. No sweeping work is done during twilight.
2. Fingernail and toe-nail are not cut together as it is believed that that person would face with one sorrowful act and one joyful event.
3. To kill a spider at night is considered a sin.
4. When somebody has hiccups, it is believed that “someone has mentioned your name”, and then this phrase is uttered: “he/she is a friend let him/her mention my name, if he/she is hostile, let him/her burst out.
5. When giving milk to somebody, a small piece of coal or a green leaf is put into milk; otherwise it is believed that the animal will no longer produce milk.