Surah Al-Furqan 25:30

وَقَالَ ٱلرَّسُولُ يَـٰرَبِّ إِنَّ قَوْمِى ٱتَّخَذُوا۟ هَـٰذَا ٱلْقُرْءَانَ مَهْجُورًا

And the Messenger has said, "O my Lord, indeed my people have taken this Qur’ān as [a thing] abandoned."

Translation: Saheeh International

Tafsir

And the Messenger Muhammad (s) says ‘O my Lord lo! my people the tribe of Quraysh consider this Qur’ān as something to be shunned’ to be disregarded.

Excerpt from Tafsir al-Jalalayn, commentary on 25:30, via Quran.com. The reader has the full commentary and 9 more tafsirs.