الحج : Hadeeth No:3164
A hadith like this has been narrated on the authority of A'mash with the same chain of transmitters (but at the end) these words are added:" He who violated the covenant with a Muslim, there is upon him the curse of Allaah, of angels and of all people. Neither an obligatory act nor a supererogatory ...
الإيمان : Hadeeth No:64
'Abdullah b. Amr b. al-As is reported to have said: Verily a person asked the Messenger of Allaah (may peace and blessings be upon him) who amongst the Muslims was better. Upon this (the Prophet) remarked: From whose hand and tongue the Muslims are safe....