The number 'Two' (إثنان - Ithnan) in the Quran carries a profound theological weight, primarily serving to illustrate the concept of duality in creation which, in turn, magnifies the absolute Oneness (Tawheed) of the Creator, Allah. Search-discovered classical scholarship, particularly the tafsir on Surah An-Nahl 16:51, establishes the core principle: 'Do not take two gods; for He is but One God,' a direct prohibition of shirk (polytheism). In contrast to this divine singularity, the Quran highlights that creation is based on pairs (zawjayn), as seen in the 'two of each' taken aboard Noah's Ark (11:40, 23:27) and the creation of livestock and fruits in pairs (6:143-144, 13:3). This duality is a sign for humanity to recognize that all created things are dependent and complementary, while only Allah is singular and self-sufficient. Furthermore, 'two' symbolizes divine support and companionship, epitomized in the account of Prophet Muhammad ﷺ and Abu Bakr in the cave as 'the second of two' (9:40), a moment where divine tranquility (Sakinah) affirmed Allah's presence with them.