This study examines the habit of saying thayyibah sentences with students' morals. To achieve improvements and changes, especially in the habit of saying thayyibah sentences, very serious attention needs to be paid to the psychological factors of students, namely the student's ability factor. These factors are thought to have an influence on students' morals. This study aims to determine the habit of saying thayyibah sentences with students' morals. The hypothesis in this study is that there is a significant influence between the habit of saying thayyibah sentences and students' morals. This study involved 35 students, namely the entire population, so this research is a quantitative study. The data was collected by using questionnaires and documentation, then the data was analyzed using the Contingency Coefficient Correlation technique. The results of this study indicate that the habit of saying thayyibah sentences with the morals of students at SD Negeri 17 Muara Padang is good, namely in the high category, where the majority of the scores are high. Thus, it can be concluded that (derived from the change to C) is smaller than rrabel at both the 5% and 1% levels, namely 0.334> 0.814 < 0.430. With this, the null hypothesis is rejected: it means that there is a significant influence between the habit of saying thayyibah sentences and students' morals. Based on the research, it was concluded that the habit of saying thayyibah sentences with the morals of students at SD Negeri 17 Muara Padang was good and so the morals of students could be categorized as good. The author also hopes that all parties involved in teaching in schools can maintain and practice in everyday life both in the school environment and outside the school environment, saying the sentence thayyibah.