(Extending the intent, accompanied by the mention of something that has a higher position and proper functioning of the letters wau or others).
According to Imam az Zarqani as quoted by Rosihan Anwar, defines the oath with the words "(a sentence to reinforce a notice)."
Ibn al-Qayyim , in his at-Tibyan, provides a definition oath with the phrase "(sentence to realize command and reinforcing) in General Indonesian Dictionary, the oath is defined with the statement spoken formally to testify to God or something considered sacred that what is said or promised it's true.
I swear on the Quran also called Yamin, because supposedly the Arabs when sworn friend always held my right hand. However, some have argued that there is a difference between qasam with halaf In the Koran the word halaf called 13 times. While the word qasam called 24 times.
Qasam or oath is not necessarily just a greeting without meaning and merely listed only in the Al Quran but there is wisdom contained in qasam contained in the Qur'an is a reinforcement that is used to convince someone to be a thing it is still doubtful where the pattern is a pattern of expression that uses qasam are often related to the study of science and one of them with Science Balaghah.
However, the oath is different from the habits of the Indonesian nation, oath refers more to a witness or corroborate the truth of something in the official forums, such as the testimony witnesses in court and the oath of office, with a determination to perform their duties well.
Seeing this condition, the researchers tried to do analysis Qasam in Quran and Implications learning Balaghoh as an attempt to examine more deeply about the nature of qasam contained in the Al Quran that produce a scientific insights which is very beneficial for the people.