Quran 43:28
وَجَعَلَهَا كَلِمَةً بَاقِيَةً فِي عَقِبِهِ لَعَلَّهُمْ يَرْجِعُونَ
This is the legacy he left to his descendants so that they may turn (to God).
He made it a lasting word among his posterity so that they may come back [to the right path].
And Ibrahim kept this declaration among his progeny, in order that they may desist.
And he made it a word enduring among his posterity; haply so they would return.
And he made it a word lasting among his descendents, so that they may return.
And he made it a word lasting among his posterity that haply they should return.
And he made it [i.e. La ilaha ill-Allah (none has the right to be worshipped but Allah Alone)] a Word lasting among his offspring (True Monotheism), that they may turn back (i.e. to repent to Allah or receive admonition).
And Abraham left behind this word to endure among his posterity so that they may return to it.
God made (belief in one God) an everlasting task for his successors, so that perhaps they would return (to Him).
And he made it a word to continue in his posterity that they may return.
And he made it a word enduring among his seed, that haply they might return.
He made this an abiding word among his descendants, in order that they would return.
And he made it a word remaining among his descendants that they might return [to it].
And he made it an enduring word in his progeny, so that they may return.
and he left these words to endure among his descendants, so that they might return [to God].
And he left it as a Word to endure among those who came after him, that they may turn back (to Allah).