Surah Ya-Sin 36:55

إِنَّ أَصْحَـٰبَ ٱلْجَنَّةِ ٱلْيَوْمَ فِى شُغُلٍ فَـٰكِهُونَ

Indeed the companions of Paradise, that Day, will be amused in [joyful] occupation -

Translation: Saheeh International

Tafsir

Indeed today the inhabitants of Paradise are busy read fī shughlin or fī shughulin oblivious to what the inhabitants of the Fire are suffering busy delighting in pleasures such as deflowering virgins — not busy with anything wearisome as there is no toil in Paradise — rejoicing blissful fākihūna is a second predicate …

Excerpt from Tafsir al-Jalalayn, commentary on 36:55, via Quran.com. The reader has the full commentary and 9 more tafsirs.