Al-Hasan Al-Basri, Muqatil bin Hayyan, `Umar bin `Abdul-`Aziz, Sa`id bin
Jubayr, An-Nakha`i, Az-Zuhri and Ibn Zayd said Riqab means those slaves who make
an agreement with the master to pay a certain ransom for their freedom.''
Similar was reported from Abu Musa Al-Ash`ari. Ibn `Abbas and Al-Hasan said, "It
is allowed to use Zakah funds to buy the freedom of slaves,'' indicating that
`Riqab' has more general meanings than merely giving money to slaves to buy
their freedom or one's buying a slave and freeing him on an individual basis. A
Hadith states that for every limb [of the servant] freed, Allah frees a limb of
the one who freed him from slavery, even a sexual organ for a sexual organ, for
the reward is equitable to the deed,
[وَمَا تُجْزَوْنَ
إِلاَّ مَا كُنتُمْ تَعْمَلُونَ ]
(And you will be requited nothing except for what you used to do.)
[37:39]