720. hadíth
وَ قَالَ أَبُو عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ: «اِشْتَرُوا اَلسُّودَ اَلْقِبَاحَ فَإِنَّهَا أَطْوَلُ اَلْإِبِلِ أَعْمَاراً ».
Abu Abdullah (a.s) said: "Purchase black, unattractive camels, for they have the longest lifespans among camels."