Rasarnavasudhakara 3.380.p2

3.380.p2

atra prasanna-rāghava-nāmety uttarasya saptākṣarāṣṭa-paṅkti-krameṇa likhite' sminn eva śloke mṛgyatvād antar-lāpo nāmeyam |

Here, because the answer, namely “bearing the name Prasannarāghava,” is to be sought in this very verse when written in the order of eight lines of seven syllables each, this is called an internal-answer riddle.