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:51:56 –

And I did not create the jinn and mankind except to worship Me.  

And I did not create the jinn and mankind except that they may worship Me: the fact that disbelievers do not worship ˹God˺ does not contradict this ˹statement˺, since a purpose does not have to be realised ˹in an act, for it to be valid˺, as when you may say: ‘I sharpened this pencil in order to write with it’, even though you might not actually write with it.
القرآن:٥١:٥٦ –

وَمَا خَلَقْتُ الْجِنَّ وَالْإِنْسَ إِلَّا لِيَعْبُدُونِ  

{وما خلقت الجن والإنس إلا ليعبدون} ولا ينافي ذلك عدم عبادة الكافرين، لأن الغاية لا يلزم وجودها كما في قولك: بريت هذا القلم لأكتب به، فإنك قد لا تكتب به.