What are the different motivations for engaging with Guru-related texts, and is one considered superior?

According to Chapter 0, Guru biography texts and knowledge texts are utilized in two primary ways. The first is 'Kamya,' which is done with a desire for worldly prosperity or for the removal of worries, calamities, and diseases. The second is 'Nishkam,' which is performed with a selfless mind for the purpose of liberation from the cycle of birth and death. The text clearly states that Nishkam Guru service, which aims for spiritual liberation, is always considered superior, whether it involves writing a Guru's biography or any other form of service.