When the master of Buddhism also made a clerical error, which word did he write wrong?

Time. The Buddhist master was a famous monk in the Tang Dynasty. He made great contributions to the education and promotion of Buddhism. Although he is an outstanding writer and calligrapher, he sometimes makes clerical mistakes. When he was writing the Heart Sutra, he accidentally misspelled the time characters of Prajna Paramita into Japanese characters. When he found the mistake, he immediately erased the typo with a pen and wrote the correct one again.