This is the 16412th most frequent Turkish word.
yattığını
The word "yattığını" means "that (he/she/it) lay down" or "that (he/she/it) is lying down," depending on the context.
In this sentence, 'yattığını' is used to indicate the act of lying down or being in a sleeping position. It's part of a clause showing someone being observed in this condition.
O gün geç yatmıştı ve sabah hâlâ yattığını gördüm.
That day he had slept late and in the morning I saw that he was still lying down.
Here, 'yattığını' describes the hero lying in the cave, reported as an observation or statement within the context of reading.
Kitapta, kahramanın mağarada yattığını okuduk.
In the book, we read that the hero was lying in the cave.
In this sentence, 'yattığını' is used to explain what the cat was doing according to my friend's statement.