Theragāthā Dukanipāta Tatiyavagga 2.23. Sobhitattheragāthā “Satimā paññavā bhikkhu, āraddhabalavīriyo; Pañca kappasatānāhaṃ, ekarattiṃ anussariṃ. Cattāro satipaṭṭhāne, satta aṭṭha ca bhāvayaṃ; Pañca kappasatānāhaṃ, ekarattiṃ anussarin”ti. … Sobhito thero ….