Literary Wisdom and Teachings of Swearing at Night From the Root “Layl” in the Holy Quran

The words of the Qur'an are wise and truths can be discovered from it with literary sciences. The question of this research is"What is the wisdom and literary teachings of swearing at night from the root "Layl" in the Holy Quran?" With a descriptive and analytical method, some of these teachings taken from literary sciences are: 1)oath to the whole, beginning, middle or end of the night and ten nights; Expressing the importance of division. 2)The verbs "Yaghshi" and "Yaser" express the gradual occurrence of night. 3)Removing the object "yaghshi" which means generalization and the object "yaghsha" land and other things. 4)"Al" gender or promise in "Al-Lail"(Fajr:4) indicates the gender of the night or a certain night. 5)The inflection of "Al-layl" to "Layal-e-Ashr" is a general over specific expression, and the inflection to "al-Fajr" is an opposite. 6)Allowing the removal of the "y" at the end of "Yasr"(Fajr:4) to express the eloquence of the speech; The permission to remove the adaf in (Shishq:17) expresses the generality. 7)Golding "Layal" expressing the greatness and designation of special nights. 8)The ratio of "Ghashi", "Saja", "Yaser" to "Al-Layl" is allowed by reason of the ratio of verb or cause to time. 9)"Sajji", "Wasaqh", "Aasas", "Yaser" are metaphors for things related to the night. 10)"Aasas" is an allusion to the end of the night. 11)contrast of night with day or night with morning; Expressing the difference between natural works or the two faces of right and wrong.