Musannaf Ibn Abi Shaybah

Hazrat Hayan al-Sulami narrates that I asked Hazrat Abdullah bin Umar (may Allah be pleased with them) that the collectors of Zakat from Hazrat Abdullah bin Zubair come to me and collect Zakat from my wealth. And the collectors from Najdah also come and they collect (what should I do?). He replied: Whomever you give to, it is sufficient on your behalf.