enmity is created and becomes boring and envy is a fresh new thing whether it is forbidden or given it does not perish. every envious person is an enemy to another envious person. what led the jews to disbelieve in muhammad peace and blessings of god be upon him although they knew him as they knew their own children that he was a truthful prophet and a true messenger and they read about his mission in their torah and studied him in their schoolhouses was envy and it stood between their scholars and belief in him and then envy resulted in their enmity towards him.
والعداوة تخلق وتمل، والحسد غض جديد، حرم أو أعطي، لا يبيد. فكل حاسد عدو بحاسد. وإنما حمل اليهود على الكفر بمحمد صلى الله عليه وسلم وهم يعرفونه كما يعرفون أبناءهم أنه نبي صادق ورسول محق، يقرءون بعثه في توراتهم، ويتدارسونه في بيت مدراسهم الحسد، وحجز بين علمائهم والإيمان به، ثم نتج لهم الحسد عداوته.