The Scientific Hijrah and their Role in the Flourishing of Scientific and Intellectual Life in Yemen in the Thirteen Century AH (Nineteenth Century AD): Hijrah of Khut, Sahyan, Thula, Shaharah, Kawkaban, and Al-Kibs as a Model. jhs. 2025;4(11):622-657. doi:10.59628/jhs.v4i11.2060