I was riding a pillion with the Prophet (ﷺ) on a donkey. He (ﷺ) said, "O Mu'adh, do you know what is the right of Allah upon His slaves, and what is the Right of His slaves upon Allah?" I said: "Allah and His Messenger know better". Upon this the Messenger of Allah (ﷺ) said, "Allah's Right upon His slaves is that they should worship Him Alone and associate nothing with Him; and His slaves' right upon Him is that He should not punish who does not associate a thing with Him." He (Mu'adh) added: I said to the Messenger of Allah: "Shall I give the glad tidings to people?" He (ﷺ) said, "Do not tell them this good news for they will depend on it alone".

[Al-Bukhari and Muslim].