"There is no gift that a father gives his son more virtuous than good manners." (Using translation from Tirmidhī 1952)   

قَالَ رَسُولُ اللهِ ﷺ مَا نَحَلَ وَالِدٌ وَلَدًا أَفْضَلَ مِنْ أَدَبٍ حَسَنٍ