(月精)The pearl or jewel in the fortieth hand of the 'thousand hand' Guanyin, towards which worship is paid in case of fevers; the hand is called 月精手.
一月精摩尼 寶珠之名。月精,梵語 candra-bhāsa;摩尼,梵語 maṇi,寶石之意。又作月光摩尼、月愛珠、月精。為千手觀音四十手中,左之一手所持之物,能令患熱毒病者得清涼。其手稱月精手,或月摩尼手。〔千手千眼觀世音菩薩大悲心陀羅尼、千光眼觀自在菩薩祕密法經〕p1918