والله لا سعادة إلا بالتوحيد - الشيخ سليمان بن سليم الله الرحيلي

The video emphasizes that monotheism (tawheed) is the key to all good, quoting Sheikh Abdul Rahman bin Nasser Al Saadi: 'All good in this world and the Hereafter is the result of tawheed, and all evil is the result of shirk.'