妙法蓮華經玄贊 1.101

1.101

贊曰：梵云笈房鉢底，此云牛相，憍梵波提訛也。過去因摘一莖禾，數顆墮地，五百生中作牛償他，今雖人身尚作牛蹄牛呞之相，因號為牛相比丘。

The Eulogy says: In Sanskrit it is Gavāmpati; here it is translated as 'Bovine Appearance'. 'Jiaofanpoti' is corrupted. In the past, because he plucked a stalk of grain and several grains fell to the ground, he had to repay others by being a cow for five hundred lives. Even though he now has a human body, he still has the appearance of cow hooves and cow rumination; hence he is called the Bovine Appearance Monk.