Sachal Sarmast (1739 – 1829) was a renowned Sindhi Sufi poet during the Kalhora era. Abdul Wahab was his real name and “Sachal” was the name he used in his own poetry. Sachu means truth in Sindhi and Sachalu means truthful. Sarmast means mystic in Sindhi and Urdu. Suchal Sarmast literally means ‘truthful mystic’. Sachal Sarmast was an ardent follower of Wahdat-ul-Wujood, an Islamic Philosophy synonymous with Hamah Oost.