Mukhtasar Muslim

`Sayyiduna Ibn Abbas (may Allah be pleased with them) narrates that` a slave of Banu Bayadah cupped the Prophet (peace and blessings of Allah be upon him), then the Prophet (peace and blessings of Allah be upon him) gave him his wages. And he interceded with his master to reduce his tax. If (the wages of the cupper) were unlawful, the Prophet (peace and blessings of Allah be upon him) would never have given him wages.