 Philosophical mysticism continued in the Islamic philosophical tradition of northern India in figures such as Khāwjah Muḥammad Baqī bi’llāh (b.1563), a celebrated mystic and the founder of Naqshbandī Sufi order, as well as in his student Shaykh Aḥmad Sirhindī (1564–1624), the proponent of the doctrine of “The Unity of Consciousness” (waḥdat al-shuhūd) and the author of Epistoles (Maktubāt). Other Muslim philosophers from the Indo-Pakistani continent who incorporated mysticism were Mullā ‘Abd al-Ḥakīm Siyalkotī, Mullā Maḥmūd Junpurī Faruqī, and Mīrzā Muḥammad Zāhid Harawī (1603–1652), who became the proponent of Suhrawardī’s illuminationist philosophy; and, perhaps the most well known philosopher-mystic, Shāh Waliullāh, who lived in the 18th century CE. Waliullāh made an attempt to reconcile Ibn-‘Arabī’s doctrine of “The Unity of Being” (waḥdat al-wūjūd) and Sirhindī’s doctrine of “The Unity of Consciousness” (waḥdat al-shuhūd). In addition to his numerous writings on the foundation of Sufi metaphysics, Shāh Waliullāh should be given credit for bringing legitimacy to mystical doctrine despite the attacks of orthodox jurists who saw Sufism as heretical.