To what extent are the mentioned hadiths authentic, and what is meant by the proverb: "Indeed, Allah Almighty has made what comes out of the son of Adam a parable for this worldly life"?

The aforementioned Hadith (definition) was narrated by Imam Ahmad, Al-Tabarani, and Al-Bayhaqi from Al-Dahhak ibn Sufyan Al-Kilabi as Marfu’ (attributed to the Prophet), and it contains Ali ibn Zayd ibn Jud’an, who is weak. It was also narrated by Ibn Hibban, Abdullah ibn Ahmad, Al-Marwazi, and Al-Bayhaqi through various chains from Al-Hasan (definition), from 'Ati, from Ubayy ibn Ka’b as Marfu’ and Mawquf (stopped at a Companion). Most narrations indicate it is Mawquf. Some scholars authenticated it, while others deemed it good (hasan).

Its meaning is that even if the food a person eats is delicious, it eventually turns into something foul. Similarly, the world, with all its adornments and blessings, is fleeting and will ultimately perish. Therefore, a wise person should not be deceived by it, because it is transient, and nothing remains for a person except the good deeds they have presented therein.