Umayr narrates: Sayyiduna Sahl bin Sakhr (may Allah be pleased with him), who had the honour of being a Companion, said to me: O my son, when you come to own the price of a slave, buy a slave with it, for provision lies in the forelocks of men.
Al-Tabarani recorded it; its chain contains Yusuf bin Khalid al-Samti, who is da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب العتق / 7210