17قالوا يا أَبانا إِنّا ذَهَبنا نَستَبِقُ وَتَرَكنا يوسُفَ عِندَ مَتاعِنا فَأَكَلَهُ الذِّئبُ ۖ وَما أَنتَ بِمُؤمِنٍ لَنا وَلَو كُنّا صادِقينَMuhammad Asad[and] said: "O our father! Behold, we went off racing with one another, and left Joseph behind with our things; and thereupon the wolf devoured him! But [we know that] thou wouldst not believe us even though we speak the truth1 -Apparently Jacob did not believe the tale of the wolf but, knowing his sons' envy of Joseph, at once realized that it was they themselves who had done grievous harm to him. Nevertheless - as is evident from Jacob's expression of hope in verse 83 of this surah - he was not quite convinced that Joseph was really dead.