The Letter Qaf 50:34. Juz 26, page 519.
ٱدْخُلُوهَا بِسَلَـٰمٍ ۖ ذَٰلِكَ يَوْمُ ٱلْخُلُودِ٣٤
Enter it in peace. This is the day of immortality.
Qaf 50:34, translated by Marmaduke Pickthall