This research originated from field observations revealing weak writing
proficiency among final-year students at Darul Hijrah Institute, Martapura, in
preparing the "Farewell Sermon" (Khutbah Wada'), which serves as a graduation
requirement. Numerous deviations from linguistic rules were observed in these
texts. The research aims to analyse five aspects: syntactic, morphological,
orthographic, and semantic errors, as well as the factors causing these errors. This
study employs a qualitative descriptive approach. The primary data sources are five
"Farewell Sermon" texts written by the students, analysed using Error Analysis
based on S.P. Corder’s model. The analysis procedures were conducted through the
five stages defined by Corder: Collection of Data, Identification of Errors,
Description of Errors, Explanation of Errors, and Evaluation of Errors. The results
revealed a total of 355 errors; the most common being syntactic errors (147) and
orthographic errors (139), followed by semantic errors (35) and morphological
errors (34). These errors are attributed to interlingual and Intralingual factors, the
latter comprising four aspects: ignorance of rule restrictions, overgeneralization,
incomplete application of rules, and false concepts hypothesised