Sari al-Saqati
Sari ibn al-Mughallis al-Saqati (Persian: السري بن المغلس السقطي, romanized: Sarī ibn al-Mughallis al-Saqaṭī was one of the early Muslim Sufi saints of Baghdad. He was one of the most influential students of Maruf Karkhi and one of the first to present Sufism (tasawwuf) in a systematic way.