The Syrian Code of Criminal Procedure prevents the following from giving testimony:
- Minors who have not reached fifteen years of age, and the court can deal with them as a supporting evidence.
- The relatives of the defendant who are the ascendants and descendants of the defendant, and his brothers and sisters, the kinship of affinity with the same degree and the husband and wife, while the relatives of the plaintiff in the criminal cases, their testimony is permissible.
The reason why they were prevented from testifying was that the law assumed that emotion could drive them into bias.
Note that this ban is not from the public order, and if it is not contested, that testimony is considered acceptable.