‏البر والصلة والآداب‏ : Hadeeth No:6359 Abu Dharr reported: Allaah's Prophet (sallAllaahu alayhi wa sallam) said to me: Don't consider anything insignificant out of good things even if it is that you meet your brother with a cheerful countenance....

‏الصلاة : Hadeeth No:1599 Jabir b. Samura reported that the Prophet of Allaah (sallAllaahu alayhi wa sallam) observed (Nafl) prayer sitting before his death....