I was sleeping before

An excerpt from the Dakshinamurti Stotram, a hymn to Shiva composed by Adi Shankara (Vedanta), a concise rendering of the teachings of the Vedas and an expression of gratitude to He who makes one realize these truths.

Mrityunjaya Stotram shloka six

Rāhugrasta-divākarendu-sadṛsho māyāsamācchādanātSanmātraḥ karaṇopasaṁharaṇato yo'bhūtsuṣuptaḥ pumān .Prāgasvāpsamiti prabodhasamaye yaḥ pratyabhijñāyateTasmai śrīgurumūrtaye nama idaṁ śrīdakṣiṇāmūrtaye .. 6..

Like the eclipsed sun and the moon, covered by Maya, one sleeps after withdrawing his senses into that self. To him who on awakening makes one realize that "I was sleeping before", to that Dakshinamurti, the teacher, I offer my salutations.

Adapted from: vishnuvkblog.blogspot.in/2015/02/dakshinamurti-stotram

Adi Shankara was an early 8th century Indian philosopher and theologian who consolidated the doctrine of Advaita Vedanta. He is credited with unifying and establishing the main currents of thought in Hinduism. 

Wikipedia: wikipedia.org/wiki/Adi_Shankara