This study aims to analyze language errors found in public media such as banners, posters, and billboards in Medan City. The errors analyzed include morphological, phonological, syntactic, lexical, and spelling mistakes that do not align with the Indonesian Language Spelling System (PUEBI) and the Indonesian Dictionary (KBBI). The method used is qualitative descriptive, with data collection through direct observation of public media in various locations in Medan City. The results show that language errors are generally caused by a lack of understanding of correct language rules, limited knowledge, and the use of everyday language mixed with colloquial or regional languages. The proposed solutions to address these issues are providing training for media creators, creating clearer language guidelines, and utilizing language technology for automatic spelling checks. The implications of this study are to raise public awareness about the importance of using proper and accurate Indonesian in public media, to support effective communication, and to avoid miscommunication.

This study aims to examine the role of Islamic accounting in the muamalah perspective as an important instrument in promoting sustainable economic growth. Islamic accounting, which is based on the principles of fairness, transparency, and benefit, plays a role not only in recording financial transactions, but also in ensuring business practices are in accordance with Islamic law. In the context of muamalah, principles such as the prohibition of riba, gharar, and maisir encourage the creation of a fair and stable economic system. This research uses the literature review method by analyzing relevant theories and previous research. The results of the study show that the implementation of Islamic accounting not only provides benefits for business people, but also contributes to sustainable development goals, such as poverty reduction, social welfare improvement, and environmental preservation. Thus, the application of Islamic accounting in muamalah practice can be a holistic solution to realize sustainable and equitable economic growth.

Clean and Healthy Living Behavior (PHBS) is a way for the community to be able to maintain the quality of their health. One indicator that is used as a reference is Handwashing with Soap (CTPS), because it can prevent the occurrence of diarrhea and ISPA, especially in vulnerable groups such as school-age children. However, learning about health in schools often uses inappropriate methods and media. This activity aims to increase students knowledge about washing hands with soap at Insan Ikhlas Islamic School. The activity method is carried out by counseling and health education about good and correct CTPS at school. The results of this activity have been socialization and counseling to 25 students, in addition to that, handwashing with soap (CTPS) was also carried out at Insan Ikhlas Islamic School. The conclusion of this activity is that students are able to practice how to wash their hands properly using soap and flowing water.