瑜伽論記 5.412

5.412

云何定者能度廣欲愛、而未得腰舟？者，此問學人云何斷五下分結方便未得無學時意腰舟，如世度海以葫蘆或皮袋或餘作為浮囊梙置腰上名曰腰舟，海喻生死，意識如腰，慧如舟故。

'How can one in concentration cross the vast sensual craving while not yet having attained the waist-boat?': this asks how a trainee, as an expedient means for severing the five fetters binding to the lower realms, when not yet having attained [the stage of] an adept, [crosses] with the mental waist-boat. Just as in the world when crossing the sea one uses a gourd, a leather bag, or other materials made into a float wrapped around the waist and called a 'waist-boat', the sea is a metaphor for saṃsāra, the mental consciousness is like the waist, and wisdom is like the boat.