Hadees Related to Salat (Namaz)

Abu Qatadah ibne-Rib'i Radiyallahu 'anhu reported that Rasulullah Sallallahu 'alaihi wasallam narrates in a Hadith Qudsi that Allah 'Azza wa Jall has said: Verily, I have enjoined upon your Ummah five times Salat, and I have taken upon myself an oath that
anyone who observes them at their appointed time, I shall admit him into Paradise; if anyone does not offer them regularly, there is no such guarantee from Me for him (I may punish him or forgive him)
(Abu Dawud)