Kaleed ul Tauheed Kalan: Tauheed is the foremost and basic element of Islam. No one can be a Muslim without its verification. For reaching the core of Tawhid it is very essential to understand the true meaning of Tawhid. However, without the key of Tawhid it is impossible to understand as well as reach the ultimate level of Tawhid. Key of Tawhid is perfect spiritual guide who himself is aware of secrets of Tawhid and has also become Tawhid after annihilation in Tawhid. The perfect spiritual guide of the era is Sultan ul Ashiqeen Sultan Mohammad Najib ur Rehman.
Sultan ul Arifeen Sultan Bahoo described secrets of Tawhid in his book “Kaleed ul Tauheed Kalan” in a very beautiful and unique way that no one else can describe them. This Urdu translation is very precise and easy to understand because it is done under the esoteric and exoteric supervision of Sultan ul Ashiqeen Sultan Mohammad Najib ur Rehman. For those who want to reach the ultimate level of Tawhid, this books is the only source for them.