‏الوصية : Hadeeth No:3987 Ibn Umar (Allaah be pleased with them) reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: It is the duty of a Muslim who has something which is to be given as a bequest not to have it for two nights without having his will written down regarding it....

‏الإمارة : Hadeeth No:4712 It has been narrated on the authority of Uqba b. Amir who said: I heard the Messenger of Allaah (sallAllaahu alayhi wa sallam) say: Lands shall be thrown open to you and Allaah will suffice you (against your enemies), but none of you should give up playing with his arrows....