And it is narrated from Ibn Abbas (may Allah be pleased with them both) that one can free a slave from his zakat and can give it for Hajj. And Imam Hasan al-Basri (may Allah have mercy on him) said that if someone buys himself, being a slave, from zakat wealth and frees himself, it is permissible. And zakat may also be given for the expenses of the Mujahideen. Similarly, zakat can be given to a person who has not performed Hajj (so that he may perform Hajj with this assistance). Then he recited the verse from Surah At-Tawbah «إنما الصدقات للفقراء‏» to the end and said that giving zakat to any of those mentioned (in the Ayah as recipients of zakat) is sufficient. And the Prophet (peace and blessings of Allah be upon him) said that Khalid (may Allah be pleased with him) has dedicated his armors in the way of Allah. It is narrated from Abu al-As (the senior companion from Khuza’ah) (may Allah be pleased with him) that the Prophet (peace and blessings of Allah be upon him) made us perform Hajj riding on the camels of zakat.

Narrated Abu Huraira: Allah's Apostle (p.b.u.h) ordered (a person) to collect Zakat, and that person returned and told him that Ibn Jamil, Khalid bin Al-Walid, and `Abbas bin `Abdul Muttalib had refused to give Zakat." The Prophet said, "What made Ibn Jamil refuse to give Zakat though he was a poor man, and was made wealthy by Allah and His Apostle ? But you are unfair in asking Zakat from Khalid as he is keeping his armor for Allah's Cause (for Jihad). As for `Abbas bin `Abdul Muttalib, he is the uncle of Allah's Apostle (p.b.u.h) and Zakat is compulsory on him and he should pay it double."