Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
quran:11:2 –

˹Through a messenger, saying˺, "Do not worship except Allah. Indeed, I am to you from Him a warner and a bringer of good tidings,"  

˹Saying:˺ ‘Worship none but God. Truly I am to you a warner from Him, of chastisement, if you disbelieve, and a bearer of good tidings’, of reward, if you believe.
القرآن:١١:٢ –

أَلَّا تَعْبُدُوا إِلَّا اللَّهَ ۚ إِنَّنِي لَكُمْ مِنْهُ نَذِيرٌ وَبَشِيرٌ  

{أ} أي بأن {لا تعبدوا إلا الله إنني لكم منه نذير} بالعذاب إن كفرتم {وبشير} بالثواب إن آمنتم.

See similar narrations below:

Collected by Qurʾān
quran:51:50 –

So flee to Allah. Indeed, I am to you from Him a clear warner.  

So flee unto God, that is to say, away from His punishment toward His reward by being obedient to Him and not disobeying Him. Truly I am a clear warner to you from Him.
القرآن:٥١:٥٠ –

فَفِرُّوا إِلَى اللَّهِ ۖ إِنِّي لَكُمْ مِنْهُ نَذِيرٌ مُبِينٌ  

{ففروا إلى الله} أي إلى ثوابه من عقابه بأن تطيعوه ولا تعصوه {إني لكم منه نذير مبين} بيِّن الإنذار.