Sa’d ibn Khalaf narrated that Imam Kazim (a.s) said: “Salat is as sweet smelling as a freshly cut branch of a green tree when they are performed on time. One picks from a tree when it is fresh, pure and good smelling. Therefore I advise you to perform your prayers on time.” Mishkāt al-anwār fī ghurar al-akhbār h. 345