(60) باب مَا جَاءَ فِي الاِقْتِصَادِ فِي الْحُبِّ وَالْبُغْضِ
Muhammad bin Sirin narrated from Abu Hurairah - and I think he (narrated it from the Prophet) who said:
"Love your beloved moderately, perhaps he becomes hated to you someday. And hate whom you hate moderately, perhaps he becomes your beloved someday." (ES)
Reference (ES): Jami` at-Tirmidhi 1997 (ES)
In-book reference (ES): Book 27, Hadith 103 (ES)
English translation (ES): Vol. 4, Book 1, Hadith 1997 (ES)