וַֽיְהִ֖י מִקֵּ֣ץ יָמִ֑ים וַיָּבֵ֨א קַ֜יִן מִפְּרִ֧י הָֽאֲדָמָ֛ה מִנְחָ֖ה לַֽיהוָֽה׃
E aconteceu, ao fim de dias(Depois de um tempo), que Kayin trouxe do fruto da terra uma oferenda a Hashem.
The Midrash of Philo
Why Cain after some days offers up the first-fruits of his fruits, but when it is said that "Abel offered up first-fruits of the first-born of his flock and of the fat," "after some days" is not added? (Genesis 4:3-4).
On the Birth of Abel and the Sacrifices Offered by him and by his Brother Cain
[52] “And it came to pass after some days that Cain brought of the fruits of the earth as an offering to God” (Gen. 4:3). There are two charges against the self-lover: one that he made his thank-offering to God “after some days,” instead of at once; the other that he offered of the fruits and not of the earliest fruits, or in a single word the first-fruits. Let us examine each of the charges, taking first that which is first in order.