Hatim on Enmity: No one is a true enemy except for Satan

Al-Ghazali reported: Hatim al-Asim, may Allah have mercy on him, said, “I saw the people being enemies to each other for some motive or cause. I reflected upon the saying of the Almighty: Verily, Satan is an enemy to you, so take him as an enemy (35:6). Then, I knew that it was not permissible to show enmity to anyone but Satan.”

Source: Ayyuhā al-Walad 1/33

عن الغزالي عن حاتم الأصم رحمه الله قال أنى رأيت الناس يعادى بعضهم بعضا لغرض وسبب فتأملت فى قوله تعالى إِنَّ الشَّيْطَانَ لَكُمْ عَدُوٌّ فَاتَّخِذُوهُ عَدُوًّا فعلمت أنه لا يجوز عداوة احد غير الشيطان

1/33 أيها الولد