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:37:126 –

Allah, your Lord and the Lord of your first forefathers?"  

God, your Lord, and the Lord of your forefathers?’ (read ˹as predicates˺ allāhu, rabbukum and rabbu, in the nominative, because of the ˹implicit˺ omitted huwa ˹being the subject˺; or read allāha, rabbakum and rabba, in the accusative, as supplements to ahsana, ‘the best of’).
القرآن:٣٧:١٢٦ –

اللَّهَ رَبَّكُمْ وَرَبَّ آبَائِكُمُ الْأَوَّلِينَ  

{اللهُ ربُّكم وربُّ آبائكم الأولين} برفع الثلاثة على إضمار هو، وبنصبها على البدل من أحسن.

See similar narrations below:

Collected by Qurʾān
quran:26:26 –

˹Moses˺ said, "Your Lord and the Lord of your first forefathers."  

He, Moses, said, ‘Your Lord and the Lord of your forefathers’. Now, even though this ˹fact˺ is comprised by what was ˹said˺ before it enrages Pharaoh, and therefore:
القرآن:٢٦:٢٦ –

قَالَ رَبُّكُمْ وَرَبُّ آبَائِكُمُ الْأَوَّلِينَ  

{قال} موسى {ربكم ورب آبائكم الأولين} وهذا وإن كان داخلا فيما قبله يغيظ فرعون ولذلك.
quran:44:8 –

There is no deity except Him; He gives life and causes death. ˹He is˺ your Lord and the Lord of your first forefathers.  

There is no god except Him. He gives life and brings death. Your Lord and the Lord of your forefathers.
القرآن:٤٤:٨ –

لَا إِلَٰهَ إِلَّا هُوَ يُحْيِي وَيُمِيتُ ۖ رَبُّكُمْ وَرَبُّ آبَائِكُمُ الْأَوَّلِينَ  

{لا إله إلا هو يحيي ويميت ربكم ورب آبائكم الأولين}.