This article examines saj’ in the science of badi’ and provides examples of the use of saj’ murashsha’ in Surah Al-Waqi’ah. Saj’ is a part of muhassinat al-lafdziyah that specifically discusses the similarity of the final letters in two or more fashilahs. Saj’ is divided into three types: saj’ mutharraf, saj’ murashsha’, and saj’ mutawazi. This research employs a qualitative approach through library study. Based on the analysis conducted by the researcher, there are six instances of saj’ murashsha’ found in Surah Al-Waqi’ah.

Writing Skills is one of the four maharah studied in Arabic. Writing Skills  is a way of expressing language and feelings through writing. In Writing Skills there are three elements that are trained intensively, namely, imla', khat (calligraphy) and insha'. The success of an Arabic written work can be seen from the effectiveness of the Writing Skills studied. The aim of this research is to determine the extent of the effectiveness of Writing Skills on the writing results of Arabic language education students at the North Sumatra State Islamic University Medan. This research uses qualitative methods with data collection methods using interviews and library literature. The results of this research found that the Writing Skills studied by Semester V Arabic Language Education students at the North Sumatra State Islamic University, Medan, was quite effective. Where students already understand the rules of writing Arabic properly and correctly and are able to write an essay in Arabic writing.