Abstract
The sciences of recitation and hadith are like two parts of a whole that ensures the safe transmission of the two basic sources of religion. Each discipline has its own basic conditions for the establishment of the security of information transfer. In the science of hadith, narrations are divided into two as mutawatir and ahad, according to the number of narrators. According to the number of the narrators of each layer who provide the transmission of Ahad news, it was determined as meshur, azîz and garîb, and the conditions of soundness were created to determine the accepted or rejected ones. Hese two branches of science had similar and different conditions. Memorizing the texts has been the main assurance in the transmission of the Qur'an and hadith from generation to generation. On the other hand, it is seen that the change of the Torah and the Bible is a result of not being memorized and preserved only in the books. The warning about staying away from avoiding mushafi in the transmission of the Qur'an; and the sahafi in the transmission of the hadith has brought to the fore the scholars who have deepened in these sciences and have a strong memory. The condition of soundness/acceptance, which is the correctness of the proof in the science of recitation, expresses a multidimensional reality of meaning, which also includes the condition that there should be no disconnection between the narrators in the science of hadith. In the study, first of all, the sound conditions of the science of recitation were examined in detail under separate headings. Secondly, the sound conditions of the science of hadith are explained. Finally, the sound conditions used by these two disciplines in the transmission of the narration and the related issues are discussed from a comparative perspective.