Hawzah News Agency – The Prophet (SAWA), in his will to Abu Dharr said,

يا أبا ذرٍّ، لا يكونُ الرّجُلُ مِن المُتَّقينَ حتّى‏ يُحاسِبَ نَفسَهُ أشَدَّ مِن مُحاسَبَةِ الشَّريكِ لِشَريكِهِ، فيَعلَمَ مِن أينَ مَطعَمُهُ، ومِن أينَ مَشرَبُهُ، ومِن أينَ مَلبَسُهُ؟ أمِن حِلٍّ ذلكَ، أم مِن حَرامٍ؟

'O Abu Dharr, a man will not be among the Godwary until he takes account of himself more than a partner would take account of his [business] partner, such that he knows where his food comes from, where his drink comes from, and where his clothes come from - do they come from the lawful or the prohibited?'

Source: Kanz al-Ummal, no. 8501