Muhammad Qutb
Earlier in the 20th century, prior to the "reopening" of slavery by Salafi scholars like Shaykh al-Fawzan, Islamist authors declared slavery outdated without actually clearly affirming and promoting its abolition. This has caused at least one scholar (William Clarence-Smith) to bemoan the "dogged refusal of Mawlana Mawdudi to give up on slavery" and the notable "evasions and silences of Muhammad Qutb".