Ash-Shu'araa • BN-TAFSEER-IBN-E-KASEER
﴿ إِذْ قَالَ لِأَبِيهِ وَقَوْمِهِۦ مَا تَعْبُدُونَ ﴾
“[how it was] when he asked his father and his people, “What is it that you worship?””
Please check ayah 26:77 for complete tafsir.