Shinran's hymn, the , which was originally printed in Shinran's magnum opus, the Kyogyoshinsho. The Shoshinge is the primary liturgy used in Jodo Shinshu services, apart from Buddhist sutras, and is recited every morning at 6:00 at the Nishi Honganji temple services. Further, Rennyo Shonin was the author of several works relating to Jōdo Shinshū doctrine. His most influential work is his collection of letters to various Shinshu monto (lay groups), popularly known as in the Nishi Hongan-ji tradition, and in the Higashi Hongan-ji tradition. These letters have the status of scriptural texts and are traditionally used in Shinshu daily liturgy; the most well-known letter is the which is a reflection on the impermanence of life and the importance of relying on Amida Buddha's Vow. This letter is frequently read aloud during Jōdo Shinshū funeral services. Rennyo's disciples also recorded things he said in a collection called the , which provides later followers with some insight into his personality and beliefs. Legacy Such was Rennyo's importance in reviving Shinran's teachings that he is revered by devotees as the "second founder" of the Jōdo Shinshū tradition. For example, Rennyo's image is typically venerated in Jodo Shinshu shrines to the left of Amitābha Buddha (while Shinran is usually enshrined to the right). Rennyo is credited with bringing Jodo Shinshu teachings to a wider audience through proselytization, and also through his letters, which provided accessible, clear explanations of Shinshu doctrine in comparison to Shinran's writings, which are in Classical Chinese. Rennyo clarified Shinran's teachings, provided a simple code of conduct, and reformed the temple hierarchy and liturgy. There is debate among scholars belonging to the sect as to whether Rennyo's legacy was good for the Jōdo Shinshū or not. On the one hand, Rennyo gave the disorganized Shinshū movement a coherent structure, translated Shinran's teachings into simpler language, and developed a common liturgy. On the other hand, the process of institutionalization that Rennyo accelerated arguably departed from Shinshū's original egalitarianism, and led to a disjunction between priest-scholars and lay devotees contrary to Shinran's intentions. Rennyo also introduced certain doctrinal elements from the rival Seizan Jōdo Shū tradition into the Shinshū, and tolerated Shinto belief in kami to a greater extent than Shinran had. Jodo Shinshu sects that have remained independent of the Honganji, such as the Senju-ji sect, do not recognize Rennyo's reforms and innovations. His 500th memorial service was observed in 1998.