大方便佛報恩經 3.54

3.54

At that time Ānanda spread the niṣīdana. The Tathāgata sat upon it, crossing his legs in the lotus posture. At that time Ānanda, observing the minds of the assembly, asked the Tathāgata: “Bhagavat! What actions did the insect seen earlier in the filthy feces commit in its past lives? For how long has it been born in this water? And at what time will it attain liberation?”