“I once asked al-Rida’ (a.s.), about the case of a man who has made a will for a man about a sword which is in a cover (sword sheathing) with decorations on it. The heirs said that only the sword is for him and not the asset (the valuable decorations). He (the Imam) said, ‘The sword and that in which it is belongs to him.’ I then asked about the case of a man who makes a will about a box for a man. The heirs say that only the box without its contents belongs to him. ‘Not only the box but its contents also belong to him’, said abu al-Hassan (a.s.) .”