Shams-i-Tabrīzī or Shams al-Din Mohammad (1185–1248) was a Persian Muslim, who is credited as the spiritual instructor of Mewlānā Jalāl ad-Dīn Muhammad Balkhi, also known as Rumi and is referenced with great reverence in Rumi's poetic collection, in particular Diwan-i Shams-i Tabrīzī (The Works of Shams of Tabriz).

On 15 November 1244, a man in a black suit from head to toe came to the famous inn of Sugar Merchants of Konya. His name was Shams Tabrizi. He was claiming to be a travelling merchant. As it was said in Haji Bektash Veli's book, "Makalat", he was looking for something which he was going to find in Konya. Eventually he found Rumi riding a horse.

One day Rumi was reading next to a large stack of books. Shams Tabriz, passing by, asked him, "What are you doing?" Rumi scoffingly replied, "Something you cannot understand." (This is knowledge that cannot be understood by the unlearned.) On hearing this, Shams threw the stack of books into a nearby pool of water. Rumi hastily rescued the books and to his surprise they were all dry. Rumi then asked Shams, "What is this?" To which Shams replied, "Mowlana, this is what you cannot understand." (This is knowledge that cannot be understood by the learned.)