The Rocky Tract
لَا تَمُدَّنَّ عَيْنَيْكَ إِلَىٰ مَا مَتَّعْنَا بِهِۦٓ أَزْوَٰجًا مِّنْهُمْ وَلَا تَحْزَنْ عَلَيْهِمْ وَٱخْفِضْ جَنَاحَكَ لِلْمُؤْمِنِينَ
Do not extend your eyes toward that by which We have given enjoyment to [certain] categories of the disbelievers, and do not grieve over them. And lower your wing to the believers
Nearby ayahs help place verse 15:88 in sequence and meaning.
إِنَّ رَبَّكَ هُوَ ٱلْخَلَّـٰقُ ٱلْعَلِيمُ
Indeed, your Lord - He is the Knowing Creator.
وَلَقَدْ ءَاتَيْنَـٰكَ سَبْعًا مِّنَ ٱلْمَثَانِى وَٱلْقُرْءَانَ ٱلْعَظِيمَ
And We have certainly given you, [O Muhammad], seven of the often repeated [verses] and the great Qur'an.
وَقُلْ إِنِّىٓ أَنَا ٱلنَّذِيرُ ٱلْمُبِينُ
And say, "Indeed, I am the clear warner" -
كَمَآ أَنزَلْنَا عَلَى ٱلْمُقْتَسِمِينَ
Just as We had revealed [scriptures] to the separators