Theragāthā Ekakanipāta Sattamavagga 1.63. Pakkhattheragāthā “Cutā patanti patitā, giddhā ca punarāgatā; Kataṃ kiccaṃ rataṃ rammaṃ, sukhenanvāgataṃ sukhan”ti. … Pakkho thero ….