Sayyiduna Abu Khayrah (may Allah be pleased with him) said: I had camels on which I used to carry loads, so I came to Madinah and took part with the Prophet (peace and blessings be upon him) in Khaybar, or he said: in Hunayn, and we used to carry water for him (peace and blessings be upon him) on our camels. I also had a trade in Madinah, so the Prophet (peace and blessings be upon him) prayed for blessing (in it) and also prayed for my father.
Hadith Referenceالمعجم الكبير للطبراني / مسند من يعرف بالكنى / 19125