وَتَتَّخِذُونَ مَصَانِعَ لَعَلَّكُمْ تَخْلُدُونَ
Asad Quran Translation
and make for yourselves mighty castles, [hoping] that you might become immortal?57
The meaning could be either "hoping that you might live in them forever", or "that you might gain immortal renown for having built them".
Malik Quran Translation
Are you building strong fortresses as if you are going to live here forever?
Yusuf Ali Quran Translation
"And do ye get for yourselves fine buildings in the hope of living therein (forever)?
Mustafa Khattab Quran Translation
and construct castles, as if you are going to live forever,
Piktal Quran Translation
And seek ye out strongholds, that haply ye may last for ever?
Watattakhithoona masaniAAa laAAallakum takhludoona