«وَإِمَّا بِالتَّكْمِيلِ، وَيُسَمَّى الِاحْتِرَاسَ أَيْضًا»
Another form is takmīl, also called iḥtirās (safeguarding).
Takmīl is employed when preceding wording may suggest an unintended contrary meaning, and an added phrase prevents that misreading. Its purpose is not simply to repeat the original claim more forcefully. It protects a vulnerable aspect of the intended sense. The name iḥtirās is apt because the additional expression guards the statement against plausible misunderstanding.