Caitanya-caritāmṛta 20.349
cāri-yugāvatāre ei ta’ gaṇana śuni’ bhaṅgi kari’ tāṅre puche sanātana
[chaari-yugaavataare ei ta’ ganana shuni’ bhangi kari’ taanre puche sanaatana]
Blended reading (Sanskrit + English inline)
cāri-yugāvatāre ei ta’ gaṇana śuni’ bhaṅgi kari’ tāṅre puche sanātana
“Thus I have given a description of the incarnations of the four different yugas.” After hearing all this, Sanātana Gosvāmī gave an indirect hint to the Lord.
My note
Source: vedabase.io