Theragāthā Ekakanipāta Catutthavagga 1.37. Kumāputtasahāyakattheragāthā “Nānājanapadaṃ yanti, Vicarantā asaññatā; Samādhiñca virādhenti, Kiṃsu raṭṭhacariyā karissati; Tasmā vineyya sārambhaṃ, Jhāyeyya apurakkhato”ti. … Kumāputtattherassa sahāyako thero ….