AN.1.16
16. “Nāhaṃ, bhikkhave, aññaṃ ekadhammampi samanupassāmi yena anuppanno vā kāmacchando nuppajjati uppanno vā kāmacchando pahīyati yathayidaṃ, bhikkhave, asubhanimittaṃ. Asubhanimittaṃ, bhikkhave, yoniso manasi karoto anuppanno ceva kāmacchando nuppajjati uppanno ca kāmacchando pahīyatī”ti. Chaṭṭhaṃ.