Surah Yusuf — Ayah 85 (12:85)
قَالُواْ تَٱللَّهِ تَفۡتَؤُاْ تَذۡكُرُ يُوسُفَ حَتَّىٰ تَكُونَ حَرَضًا أَوۡ تَكُونَ مِنَ ٱلۡهَٰلِكِينَ ٨٥
English translation (Saheeh International)
They said, "By Allāh, you will not cease remembering Joseph until you become fatally ill or become of those who perish."
Brief commentary
The brothers of Joseph said to the father, swearing by Allah, that he would not stop remembering Joseph and grieving over him until he became very ill or actually died.