Suhayl bin Abi Salih narrates from his father that he came to Sa'd bin Abi Waqqas (may Allah be pleased with him) and said: I have wealth on which I wish to pay the zakah, and I know where it should go, while these people do with it what you have seen. He said: Then pay it to them. He said: I asked Abu Sa'id (may Allah be pleased with him) the same question, and he said: Pay it to them. He said: I also asked Ibn Umar (may Allah be pleased with them both) about this, and he said: Pay it to them.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الزكاة / 7385