Lord Sani - Legend

Shani is a Deva and son of Surya (the Hindu Sun God) and his wife Chhaya (Shadow goddess) and hence also known as Chayyaputra. He is the elder brother of Yama, the Hindu God of death, who in some scriptures corresponds to the deliverance of justice. Interestingly, Surya's two sons Shani and Yama judge. Shani gives us the results of one's deeds through one's life through appropriate punishments and rewards; Yama grants the results of one's deeds after death.^[1]
It is said that when Shani opened his eyes as a baby for the very first time, the sun went into an eclipse, which clearly denotes the impact of Shani on astrological charts. He is known as the greatest teacher. Shani dev is said to be very harmful to those who follow the path of betrayal, backstabbing and unjust revenge. He is known in Hindu scriptures as the greatest trouble giver as well as the greatest well wisher. He is depicted dark in colour, clothed in black; holding a sword, arrows and two daggers and variously mounted on a black crow.^[2 
Legend:
The story of Shani Bhagavan's life is described in Shri Shani Mahatmyam ॥श्रीशनिमहात्म्यं॥ written several centuries ago. The story of Shani Mahatmyam describes how devotion is required to please him and receive his kripa (blessings). Shri Shani Mahatmyam begins with descriptions of the importance of the other planets and their strengths. These are told by the scholars serving king Vikramaditya's court from the city of Ujjain.
Shani Bhagavan is described as having a dark complexion, a beautiful face, his caste is teli (Oil vendors), and he prays Kal-bhairav. After listening to the birth story of Shani, Vikramaditya laughed and ridiculed him. Shani heard the remarks of Vikramaditya and placed a curse on him. The story goes on to describe Vikramaditya's difficulties as a result of offending Shani. He loses his kingdom, he is charged with stealing, his hands and legs are cut-off by a neighbouring king. Eventually, Vikramaditya prays to Shani, who is satisfied with Vikramaditya's devotion and brings him back to his former glory. The last part of the story describes various experiences faced by various gods, demons and sages, including Brihaspati (the Guru of gods) and Shiva et al. Shani Mahatmyam stresses values such as perseverance in difficult times, complete devotion (bhakti) and faith in the values one believes in, and never to lose confidence in life in spite of difficulties.
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