"Gift of Allah (swt)." He was the first successor appointed among humans on earth. After Sheeth, Adam (as) had another son named Yafith. When both sons reached maturity, Allah (swt), the Almighty and Glorious, intended to continue human progeny and fulfill what was decreed by His (swt) command. To enforce the prohibition of marriage between brothers and sisters, Allah (swt) sent down, after the afternoon (Asr) on a Thursday, a heavenly woman from Paradise named Nazlah. Allah (swt) commanded Adam (as) to marry her to Sheeth, and so he did. The next afternoon, on Friday, Allah (swt) sent down another heavenly woman from Paradise named Munzalah. Allah (swt) commanded Adam (as) to marry her to Yafith, and so he did. Sheeth and Nazlah had a son, and Yafith and Munzalah had a daughter. When these children grew up, Allah (swt) commanded Adam (as) to marry the daughter of Yafith to the son of Sheeth. Adam obeyed this command, and from their lineage came the chosen ones among the prophets and messengers. Far be it from Allah (swt) that human propagation occurred as some have claimed-through marriage between brothers and sisters. Instead, Allah (swt) ensured the preservation of purity and honor in the lineage through divine arrangements.