What scriptures mention the "Vaikuntha-Kamalaja" form which is Half Vishnu & Half Lakshmi?

Question

We all know "Ardhanarishvara" form of Shiva & Shakti . Similarly. Vaikuntha-Kamalaja is depicted as Vishnu-Lakshmi ,half male and half female, split down the middle. The right half is the male Vishnu, illustrating his traditional attributes. The icon symbolises the oneness or non-duality of male and female principles of the universe.

My question is-

1) In which texts , we find mentioning of this composite form of Shri Vishnu and Shree Lakshmi. , (Preferably mentioning of one or two verses or passages related to this) from original scripture.

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Answer 1

The half-Narayana half-Lakshmi form is referred in the renowned Tantrik compendium named Sharadatilaka composed by Lakshmana Desikendra as the presiding deity of the Keshavâdi Mâtrikânyâsa which is employed while worshipping with Vaishnava mantras. The iconography as stated in Sharadatilaka is :-

हस्तैर्बिभ्रत् सरसिजगदाशङ्ख चक्राणि विद्यां पद्मादर्शौ कनककलशं मेघविद्युद्विलासम् । वामो तुङ्गंस्तनमविरलाकल्पमाश्लेषलोभादेकीभूतं वपुरवतु वः पुण्डरीकाक्षलक्ष्म्योः ।।

Transliteration : May the form of Pundarikâksha & Lakshmi, who have united in one body out of affection, whose fleshy left breast appears like thunder in midst of clouds, bearing lotus, mace, conchshell, discus, book, lotus, mirror & pot of gold in their arms, protect us.(Sharadatilaka:6:45)

Answer 2

Ardhaharilakshmi is worshiped in some of the Vishnu temples who follow agamic (tantric) procedures. During the final rituals of the day i.e after shayana aarati, they worship Ardhaharilakshmi. Some of the temples which follow this are Badrinath, Kedarnath, Jagan nath and few others in Kerela. A scripture named Vamadeva Kalpa written by Gautama Vamadeva has the protocol for this procedure. This is followed in Jagannath temple in Puri. Source: from a friend.