Common misconceptions thread is quite clear...
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Judiciary
One of the accusations against Islam’s treatment of dhimmi is that a dhimmi is not allowed to give evidence against a Muslim and his oath is not acceptable in an Islamic court.
Bat Ye’or states:
Every legal case involving a Muslim and a dhimmi was judged according to Koranic law. Although the very idea of justice implies equality between parties, a dhimmi was not allowed to give evidence against a Muslim. Since his oath was unacceptable in an Islamic court his Muslim opponent could not easily be condemned. In order to defend himself, the dhimmi was obliged to purchase Muslim witnesses at great expense.14
The rule of law applies to everyone within the Khilafah and there are no exceptions. It is obligatory for the Islamic State to judge in cases concerning the dhimmi with justice and no discrimination against them is allowed.
Allah (swt) says in the Holy Qur’an:
And if you judge, judge with justice between them.
Verily, Allah loves those who act justly.15
The most famous example of this justice is in the legal trial of a Jew who stole the coat of armour of Imam Ali (ra) as he was travelling to a battle. The judge Shurayh made no exception for Ali (ra) even though he was the Khaleefah, a Muslim and also off to fight in a battle so was in desperate need of his armour. Shurayh ruled in favour of the Jew and accepted his testimony in court. Full details of the trial can be read here.
****************************************************************************The dhimmi
is allowed to be a witness in an Islamic court against a Muslim and
their evidence is acceptable. The conditions of being a witness apply equally to Muslims and dhimmi. The conditions of a witness are: sane, mature and ‘adl (trustworthy).
****************************************************************************It may be claimed that the condition of ‘Adl applies only to Muslims who refrain from committing the kabeera (major) sins. This is incorrect. ‘Adl in this context means someone who abstains from that which the people consider a violation of uprightness, whether he was a Muslim or non-Muslim. This is because ‘adaala (trustworthiness) was stipulated in the testimony of the Muslim as well as in the testimony of the non-Muslim, by using the same word without distinguishing one from the other.
Allah (swt) says in the Holy Qur’an:
O you who believe! Let there be witnesses between you when death draws to one of you, at the time of bequest, two witnesses, ‘adl (trustworthy) from among you, or two others from other than you.16
He (swt) meant non-Muslims by saying other than you. He said ‘two ‘adl witnesses from Muslims or two ‘adl from other than Muslims.’ So how can the ‘adaala be defined as not committing a kabeera (major) sin and insistence on committing a sagheera (small) sin regarding a non-Muslim? Also how can we reject as a witness the one who disobeyed his parents once, but accept as witness the spy, just because spying is not from kabeera sins? Therefore, the valid meaning of ‘adl is the one that abstained from that which the people consider violation to the uprightness.17