Surah Al-Fath 48:15

سَيَقُولُ ٱلْمُخَلَّفُونَ إِذَا ٱنطَلَقْتُمْ إِلَىٰ مَغَانِمَ لِتَأْخُذُوهَا ذَرُونَا نَتَّبِعْكُمْ ۖ يُرِيدُونَ أَن يُبَدِّلُوا۟ كَلَـٰمَ ٱللَّهِ ۚ قُل لَّن تَتَّبِعُونَا كَذَٰلِكُمْ قَالَ ٱللَّهُ مِن قَبْلُ ۖ فَسَيَقُولُونَ بَلْ تَحْسُدُونَنَا ۚ بَلْ كَانُوا۟ لَا يَفْقَهُونَ إِلَّا قَلِيلًا

Those who remained behind will say when you set out toward the war booty to take it, "Let us follow you." They wish to change the words of Allāh. Say, "Never will you follow us. Thus did Allāh say before." So they will say, "Rather, you envy us." But [in fact] they were not understanding except a little.

Translation: Saheeh International

Tafsir

Those mentioned who were left behind will say when you set forth after spoils namely the spoils of Khaybar in order to capture them ‘Let us follow you’ that we might also take a share of it. …

Excerpt from Tafsir al-Jalalayn, commentary on 48:15, via Quran.com. The reader has the full commentary and 9 more tafsirs.