(Zukhuruf) 43 : 28
وَجَعَلَهَا كَلِمَةً بَاقِيَةً فِي عَقِبِهِ لَعَلَّهُمْ يَرْجِعُونَ
He left this declaration in his descendants so that they may turn back to the aim of life.
The declaration “Allah is the only Deity deserving to be served” is the word Messenger Ibrahim left for his descendants. “So that they may turn back to the aim of life” means they may turn back to Allah through Adhikr-the Guidance- mentioned in verse 2: 38. Two conditions specified for leading to the upright direction are explained in verse 2: 186. See explanation 2: 132-133; 30: 41; and 32: 21.