Riyad as-Salihin, Book 1, Hadith 426 (In-Book) ⓘ

Mu'adh bin Jabal (May Allah be pleased with him) reported: I was riding a pillion with the Prophet on a donkey. He 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 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 said, "Do not tell them this good news for they will depend on it alone".[Al-Bukhari and Muslim].

وعن معاذ بن جبل ، رضي الله عنه ، قال‏:‏ كنت ردف النبي صلى الله عليه وسلم، على حمار فقال‏:‏ ‏"‏ يا معاذ هل تدري ما حق الله على عباده، وما حق العباد على الله‏.‏ ‏؟‏ قلت‏:‏ الله ورسوله أعلم‏.‏ قال‏:‏‏"‏فإن حق الله على العباد أن يعبدوه، ولا يشركوا به شيئاً، وحق العباد على الله أن لا يعذب من لا يشرك به شيئاً، فقلت، يا رسول الله أفلا أبشر الناس‏؟‏ قال لا تبشرهم فيتكلوا‏"‏ ‏(‏‏(‏متفق عليه‏)‏‏)‏ ‏.‏