Kalodayin was one of the six bhiksus who often acted improperly. However, he was talented and eloquent in explaining the Dharma, and was once the teacher of Queen Mailika. One evening, when he was out on alms round, a pregnant woman was so terrified by his dark complexion under the flashing lightning that she suffered a miscarriage. The Buddha thus established the precept that monastics must not go on alms rounds afternoon. When Kalodayin attained Arhatship, he repented his past wrongdoings and felt deeply ashamed. He vowed to bring a thousand couples in Sravasti to enlightenment. He later fulfilled his vow and was known for being foremost in teaching.