Rasarnavasudhakara 1.425

1.425

atha prasādaḥ-
prasiddhārtha-padatvaṃ yat sa prasādo nigadyate ||

Now, lucidity (prasāda):
The condition of having words with well-known meanings is called lucidity.

1.425.p1

233ab

1.425.p2

yathā utphulla-gaṇḍa-yugam [ku. 3.4] ity atra padānām akleśenaivārtha-bodhana-sāmarthyāt prasādaḥ |

As in utphulla-gaṇḍa-yugam [Kuvalayāvalī 3.4], here there is lucidity because the words have the capacity to convey meaning without any exertion.