Bhagavad Gita 11.18त्वमक्षरं परमं वेदितव्यं त्वमस्य विश्वस्य परं निधानम्।त्वमव्ययः शाश्वतधर्मगोप्ता सनातनस्त्वं पुरुषो मतो मे ॥

VisvasyaNidhaanam Treasurehouse of this universe, also means abode or refuge or the substratum of this universe. It is because of this that all the beings in the universe are preserved and protected. He is the inexhaustibel source to Whom the devotee turns at all times. Deluded indeed are they that ignore this divine treasurehouse and runa fter the shadow of the objects of the senses which do not contain even an iota of pleasure.Veditavyam To be known by the aspirants or seekrs of liberation, through Sravana (hearing of the scriptures), Manana (reflection) and Nididhyasana (meditation).Avyayah means inexhaustible, unchanging, undying.