Surah Al-Baqarah 2:133

أَمْ كُنتُمْ شُهَدَآءَ إِذْ حَضَرَ يَعْقُوبَ ٱلْمَوْتُ إِذْ قَالَ لِبَنِيهِ مَا تَعْبُدُونَ مِنۢ بَعْدِى قَالُوا۟ نَعْبُدُ إِلَـٰهَكَ وَإِلَـٰهَ ءَابَآئِكَ إِبْرَٰهِـۧمَ وَإِسْمَـٰعِيلَ وَإِسْحَـٰقَ إِلَـٰهًا وَٰحِدًا وَنَحْنُ لَهُۥ مُسْلِمُونَ

Or were you witnesses when death approached Jacob, when he said to his sons, "What will you worship after me?" They said, "We will worship your God and the God of your fathers, Abraham and Ishmael and Isaac - one God. And we are Muslims [in submission] to Him."

Translation: Saheeh International

Tafsir

When the Jews said to the Prophet s ‘Do you not know that on the day of his death Jacob charged his sons with Judaism?’ the following was revealed Or were you witnesses present when death came to Jacob? When idh ‘when’ substitutes for the preceding idh he said to his sons ‘What will you worship after me?’ after I …

Excerpt from Tafsir al-Jalalayn, commentary on 2:133, via Quran.com. The reader has the full commentary and 9 more tafsirs.