عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ خَالِدٍ عَنِ الْحَجَّالِ عَنْ صَفْوَانَ الْجَمَّالِ قَالَ قَالَ أَبُو عَبْدِ اللَّهِ ( عليه السلام ) يَا صَفْوَانُ اشْتَرِ لِي جَمَلًا وَ خُذْهُ أَشْوَهَ فَإِنَّهُ أَطْوَلُ شَيْ‏ءٍ أَعْمَاراً فَاشْتَرَيْتُ لَهُ جَمَلًا بِثَمَانِينَ دِرْهَماً فَأَتَيْتُهُ بِهِ .وَ فِي حَدِيثٍ آخَرَ قَالَ اشْتَرِ السُّودَ الْقِبَاحَ فَإِنَّهَا أَطْوَلُ شَيْ‏ءٍ أَعْمَاراً .
8. A number of our people have narrated from Ahmad ibn Muhammad ibn Khalid from al-Hajj al from Safwan al-Jammal who has said the following: “Abu ‘Abd Allah , once said, ‘Buy a camel for me, an ugly looking one, because it lives longer.’ I then bought for him (the Imam) a camel for eighty dirham and brought it to him (the Imam).” In another Hadith it is said that he (the Imam) said, ‘Buy the black and ugly looking one because it lives longer.’ 