Rifa bin Shaddad reported,

Were it not for a statement I heard from Amr bin Hamiq al-Khuzai, I would have walked between the head and the body of al-Mukhtar. I heard him say, "Whoever grants a man safety regarding his life, then kills him, will carry the banner of treachery on the Day of Resurrection."

Azami 6827

Sahih

عن رفاعة بن شداد الفتياني قال

لو لا كلمة سمعتها من عمرو بن الحمق الخزاعي لمشيت فيها بين رأس المختار وجسده، سمعته يقول: من أمن رجلا على دمه، فقتله فإنه يحمل لواء غذر يوم القيامة.

الأعظمي 6827صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Retaliation and crimes
Chapter
Prohibition of protected blood
Section
Man who is given a pledge of safety by another man then kills him
Numbering
Jami al-Kamil 6827 (2nd edition)
Azami 6827