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:43:81 –

Say, ˹O Muhammad˺, "If the Most Merciful had a son, then I would be the first of ˹his˺ worshippers."  

Say: ‘If the Compassionate One had a son, hypothetically ˹speaking˺, I would have been first among the worshippers, of that son; but it is established that He, exalted be He, does not have a child and thus there can be no worshipping of such ˹a child˺.
القرآن:٤٣:٨١ –

قُلْ إِنْ كَانَ لِلرَّحْمَٰنِ وَلَدٌ فَأَنَا أَوَّلُ الْعَابِدِينَ  

قل إن كان للرحمن ولد} فرضاً {فأنا أول العابدين} للولد لكن ثبت أن لا ولد له تعالى فانتفت عبادته.