It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Love your friend in moderation; perhaps one day he may become your enemy. And hate your enemy in moderation too; perhaps one day he may become your friend."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Abu al-Zinad except Abbad, and Muhammad bin Mahan is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الجيم / 3395
Hadith Takhrij«أخرجه الترمذي فى «جامعه» برقم: 1997، والبزار فى «مسنده» برقم: 9883، والطبراني فى «الأوسط» برقم: 6185»