ĪŚĀ UPANISHAD · 12

अन्धं तमः प्रविशन्ति येऽसम्भूतिमुपासते ।
ततो भूय इव ते तमो य उ सम्भूत्यां रताः ॥१२॥

andhaṃ tamaḥ praviśanti ye’sambhūtimupāsate ।
tato bhūya iva te tamo ya u sambhūtyāṃ ratāḥ ॥12॥

Into a blind darkness they enter who follow after the Non-Birth, they as if into a greater darkness who devote themselves to the Birth alone.