(Al-Insan) 76 : 5
إِنَّ الْأَبْرَارَ يَشْرَبُونَ مِنْ كَأْسٍ كَانَ مِزَاجُهَا كَافُورًا
Indeed, the virtuous will drink from a cup having flavor of camphor.
The virtuous mentioned in this verse are the grateful mentioned in the verse 3 who are one in every thousand. It includes the fore-runners who will go to the Paradise even without trial and the heedful who will go to the Paradise after trial as explained in verse 35: 32. See explanation 2: 177; 3: 190-193 and 32: 15-16.