الزخرف — Az-Zukhruf Ayat 28

وَجَعَلَهَا كَلِمَةً ۢ بَاقِيَةً فِيْ عَقِبِهٖ لَعَلَّهُمْ يَرْجِعُوْنَۗ

Wa ja‘alahā kalimatam bāqiyatan fī ‘aqibihī la‘allahum yarji‘ūn(a).

"And he made it a word remaining among his descendants that they might return [to it]."