Is it permissible for Zakah payer to buy his sheep given as Zakah from Zakah collectors?

Q 2: Is it permissible for Zakah (obligatory charity) payer to buy his sheep given as Zakah from Zakah collectors?

A 2: If the Zakah payer has already given his Zakah of wealth to the collectors, he is not allowed to restore them again through buying according to the Hadith narrated by Ibn ‘Umar (may Allah be pleased with them both): That `Umar ibn Al-Khattab (may Allah be pleased with him) gave a horse in charity in Allah's Cause and later he saw it being sold in the market and intended to purchase it. Then he went to the Prophet (may Allah's Peace and Blessings be upon him) for permission. The Prophet said, "Don't buy it and don't take back your Sadaqah (voluntary charity). May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.