"Or [until] you have a garden of palm trees and grapevines and cause rivers to gush forth in their midst"—meaning: throughout that garden.
﴿أَوْ تَكُونَ لَكَ جَنَّةٌ مِنْ نَخِيلٍ وَعِنَبٍ فَتُفَجِّرَ الأَنْهَارَ خِلالَهَا﴾ خلال تِلْكَ الْجنَّة
