"And when they commit a shameful deed," meaning: of disbelief and polytheism, "they say, 'We found our forefathers doing it, and Allah has commanded us to do it.'"
﴿وَإِذا فعلوا فَاحِشَة﴾ يَعْنِي: مِنَ الْكُفْرِ وَالشِّرْكِ ﴿قَالُوا وَجَدْنَا عَلَيْهَا آبَاءَنَا وَاللَّهُ أَمَرَنَا بهَا﴾.
