Jami` at-Tirmidhi 2509
جامع الترمذي#2509Da'ifAbu Ad-Darda' narrated that the Messenger of Allah (s.a.w) said:"Shall I not inform you of what is more virtuous than the rank of fasting, Salat, and charity?" They said: "But of course!" He said: "Making peace between each other. For indeed spoiling relations with each other is the Haliqah." It has been related that the Prophet SAW said: "It is the Haliqah, I do not speak of what cuts hair, but it severs the religion
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Bashar Awad MaaroufHasan Sahih
Zubair Ali ZaiDaif
In-book reference: 37:95