Sultan al-Ulama Baha al-Din Walad (546-628 AH / 1151-1231 CE), father of Mawlana Jalal al-Din Rumi, was a great scholar and Sufi of Balkh. Son of Husayn al-Khatibi of the renowned Khatibi family, he was honored as the 'Sultan of Scholars'. Owing to tensions with rationalist theologians and the Khwarazmshah court, and the approaching Mongol threat, he left Balkh with his family on a long migration through Baghdad, the Hijaz and Anatolia; after Larende (Karaman) he settled in Konya in 1228 at the invitation of the Seljuk Sultan Ala al-Din Kayqubad, where he taught, preached and guided disciples. His Persian work Ma'arif, containing his sermons and mystical teachings, is a principal source of Rumi's thought. In the Mevlevi chain transmitted by Aflaki and Sipahsalar he is the link immediately preceding Rumi, whose first spiritual formation he provided. He died in Konya on 18 Rabi al-Akhir 628 (23 February 1231) and was buried in the rose garden granted by Kayqubad. That site is today's Mevlana Tomb (Mevlana Museum): Rumi, who died in 1273, was buried beside his father at his own request, and the shrine rose over their graves. His sarcophagus stands next to his son's in the mausoleum.