Therefore, Shia "mujtahids" remain revered throughout the Shia Islamic world. The relationship between the "mujtahids" and "muqallids" continues to address and solve the contemporary legal issues. Participating in ijtihad, however, has been cautioned by scholars for those not properly educated in interpretation of the Qu'ran. This is narrated by Ali ibn Husayn Zayn al-Abidin, the great grandson of Muhammad, when he cautioned Aban ibn abi-Ayyash, a fellow companion, saying, "Oh brother from 'Abd Qays, if the issue becomes clear to you, then accept it. Otherwise remain silent and defer to Allah because your interpretation from the truth will be as far from the Earth as the sky."