Letter from Moses Maimonides (in his own hand with his own signature), in Fustat, to al-Shaykh al-Thiqa, in Minyat Zifta. Dating: ca. 1168–1204 CE, based …
May God grant long life to your excellency, my prop and support, the elder "the Trusted" (al-Thiqa) "the Trustworthy" (al-Amīn), and perpetuate your…