ExpressionMeaning or pattern
يَهْرَمُ / يَشِبُّGrows old / remains youthful
إِنِ احْتِيجَ إِلَيْهِIf needed — conditional clause
يَرْجِعُ / يَبْقَىReturns / remains
مُصَدِّقٌ / كَاذِبٌBelieving / lying
بِئْسَ / الْمُحْتَكِرُHow blameworthy / the hoarder
Three patterns stand out: (1) present-tense verbs describe actions or states; (2) إِنْ introduces a condition; and (3) contrasts bring meaning into sharper focus. These points have been explained with their respective hadiths rather than as an isolated grammar chapter.