In the morning they called each other to go and reap the fruits. They were not aware that their garden was burnt and their fruits were destroyed. They attributed the fruits to themselves (your crop).

The word (crop) here refers to the plants, cultivation and the cultivated land. In this regard, Allah (swt) reminds us, saying:

أَفَرَأَيْتُم مَّا تَحْرُثُونَ (63) أَأَنتُمْ تَزْرَعُونَهُ أَمْ نَحْنُ الزَّارِعُونَ (64) لَوْ نَشَاءُ لَجَعَلْنَاهُ حُطَامًا فَظَلْتُمْ تَفَكَّهُونَ (65) إِنَّا لَمُغْرَمُونَ (66) بَلْ نَحْنُ مَحْرُومُونَ

(And have you seen that [seed] which you sow? (64) Is it you who makes it grow, or are We the grower? (65) If We willed, We could make it [dry] debris, and you would remain in wonder, (66) [Saying], “Indeed, we are [now] in debt; (67) Rather, we have been deprived.”) (Al-Waqi’a: 63-67)

(  إِن كُنتُمْ صَارِمِينَ… ) (…if you would cut the fruit.”): Meaning, if you are really serious about raping the fruits of the garden.