'Abdu'r-Rahman ibn 'Awf reported that the Prophet, may Allah bless him and grant him peace, said, "I was present with my uncles at the alliance of the perfumed (Hilf al-Mutayyabin). I would not wish to break it, even for red camels."  

أَنَّ رَسُولَ اللهِ ﷺ قَالَ شَهِدْتُ مَعَ عُمُومَتِي حِلْفَ الْمُطَيَّبِينَ فَمَا أُحِبُّ أَنْ أَنْكُثَهُ وَأَنَّ لِي حُمْرَ النَّعَمِ