Sikhs worship only Vaheguru and not any inferior power that Vaheguru has created. He is only One and this is what the whole purpose of putting "Ik" before "Oankaar" is. He is without equal and he does not share power with anyone. There is no provision of worshipping any so-called Shakti of Vaheguru. Sikhs have Guru Sahib, Sikhs have Naam; nothing else is required.
Agyani (ignorant) people who are devoid of Gurmat Gyaan bow their heads before any Shakti they see. They saw thunderstorm as a power and started worshipping it as Indra.They saw Vidya as a Shakti and started worshipping it as Saraswati. Same way water, fire and other useful and powerful forces started getting worshipped. So much so that even diseases e.g. Small Pox are worshipped as Mata Sheetla.
This is paganism and not Gurmat. Gurmat only recognizes one force and that force is the Force of all Forces - Vaheguru.To say that Guru Sahib invoked the Shakti of Vaheguru is also an absurd idea. Is Vaheguru's Shakti something distinct from Vaheguru that Guru Sahib had to invoke it separately? Guru Sahib Himself is form of Vaheguru. Whom else did Guru Sahib need to invoke.
It is nothing short of blasphemy to even imagine that Vaheguru-roop Siri Guru Gobind Singh jee worshipped Devi Durga before creating Khalsa. Why would Guru Sahib worship Durga that sweeps floors at our Guru Sahib's house? Why would Guru Sahib worship or invoke or even praise Durga that cannot offer Mukti (Mukat kee Bariya kaha chhapaani)?Gurbani says that Vaheguru killed Harnaksha through Narsingha. Does this mean that Sikhs are allowed to worship the Narsingha Avatar? Absolutely not. Narsingha, Siri Krishna, Rama, Baavan Avatar et al are not worshipped by Gursikhs. Naam Abhyaas is self sufficient. A Sikh needs to worship no other force or Shakti of Vaheguru but Naam.
There is no distinct force or Shakti of Vaheguru that a Sikh needs to invoke, praise or worship. Guru Sahib has blessed Sikhs with Gurmat Naam and through Naam they worship Vaheguru. In worship of Vaheguru through Naam, all is covered. No other worship is required.
Kulbir Singh
ਸਤਿਗੁਰਬਚਨਕਮਾਵਣੇਸਚਾਏਹੁਵੀਚਾਰੁ॥