On Yuan Chwang's Travels in India, 629–645 A.D. v2.c18.s5.3

v2.c18.s5.3

The pond or tank of which Yuan-chuang makes mention was, we are told in the Fang-chih, near the "Liquid-fire village", and it was called the A-ch’i-p’o-ni-chih or the A-ch’i-p’o-t’ien (or -li)-shui. These words apparently mean the "Deadly Tank" or the "Deadly Gulf", a-ch’i-p’o being for ajīva. The Tank was only twenty two paces in circuit, and it had contained a case in which was the tiara to be worn by Maitreya when he comes to be Buddha; the tiara in the meantime is in the care of the Fire-dragon of this Tank.