(Al-Insan) 76 : 16
قَوَارِيرَ مِنْ فِضَّةٍ قَدَّرُوهَا تَقْدِيرًا
Goblets from silver, which is set according to their mind wishes.
That means the drinks in the Goblets will be set as getting in enough quantity the inmates of Paradise desire. It won’t be excess or deficit or won’t overflow while pouring. See explanation 3: 71-73.