Vishnu Purana, 1.12.64 to 68
दिश: श्रोत्रातक्षिति: पद्भयाम त्वत्त: सर्वांभूदिदम |64
न्यग्रोध: सुमहानल्पे यथा बीजे व्यवस्थित:
संयमे विश्वमखिलं बीजभूते तथा त्वयि ||65
बीजाद अंकुर सम्भूतो न्याग्रोदस्तु सामुत्थित:
विस्ताराम च यथा त्वत्तः सृष्टौ तथा जगत ||66
यथा ही कदली नान्या त्वक्पत्रादपी दृष्यते
एवं विश्वस्य नान्यस्त्वं त्वत्स्थायीश्वर दृश्यते ||67
ह्लादिनी संवित त्वयि एका सर्वसंस्थितौ
ह्लादतापकारी मिश्रा त्वयि नो गुणवर्जिता ||68
This whole universe has been manifested by You(Vishnu ).
Just as a seed of a banyan tree grows and remains as a huge tree, in the same way during the time of unmanifestation of this universe, it remains as in its seed form in You(Vishnu).
Just as the seed grows into a sapling and takes up a huge form of a banyan tree in the same way during the time of creation this universe manifests from You and takes up this huge shape.
Oh Supreme controller, just as a banana tree doesn't seem different from its leaves, in the same way You are not different from this manifest universe, this universe is seen to be situated in You.
You who is the basis of all manifestation, in your svarupa You who is- ahladini, samvit and sandhini (sat, chit, ananda) remain as one.
You dont experience material pleasure or pain(from sattva or tamas) or the mixture of both( due to rajas) because You are nirgun(without material qualities).