The Soundarya Lahari (Sanskrit: सौन्दर्यलहरी) meaning "Waves Of Beauty" is a famous literary work in Sanskrit believed to be written by sage Pushpadanta and Adi Shankara. Some believe the first part "Ananda Lahari" was etched on mount Meru by Ganesha himself (or by Pushpadanta). Sage Gaudapada, the teacher of Shankar's teacher Govinda Bhagavadpada, memorised the writings of Pushpadanta which was carried down to Adi Shankara. Its hundred and three shlokas (verses) eulogize the beauty, grace and munificence of Goddess Parvati / Dakshayani, consort of Shiva. W. Norman Brown translated it to English which was published as volume 43 of the Harvard Oriental Series in 1958.
The Soundarya Lahari is not only the collections of holy hymns, but also a tantra textbook, giving instructions Puja on SRI-YANTHRA and worshipping method, 100 different hymns, 100 different yantras, almost one to each sloka; describes tantric ways of performing devotion connected to each specific sloka; and details the results ensuring therefrom. There are many interpretations and commentaries but best of these are arguably those that provide word-to-word translations, as also the yantras, the devotion to be performed and the results of the devotion.
It is said that once Adi Shankara visited Kailash to worship Shiva and Parvathi. There, the Lord gave him a manuscript containing 100 verses which described the many facets of the Goddess, as a gift to him. While Shankara was returning after visiting Kailash, Nandi stopped him on the way. He snatched the manuscript from him, tore it into two, took one part and gave the other to Shankara. Shankara, desolate, ran to Shiva and narrated the incident to him. Shiva, smiling, commanded him to retain the 41 verses with him as the initial part of the 100 verses and then, write an extra 59 verses in praise of the Goddess himself. Thus, verses 1 - 41 are the original work of Lord Shiva, shedding great light on the ancient rituals of Tantra, Yantra and various powerful Mantras. Verses 1 - 41 describe the mystical experience of the union of Shiva and Shakti and related phenomena. In fact, it opens with the assertion that Only when Shiva is united with Shakti does he have the power to create.