I read a Hadith in which it is mentioned that even a blind person has to attend the Musjid for Jamaa't Salaat even if he has no one to guide him.

Answer

It is permissible for a blind person who has no guide or who is unable to go to the Musjid alone, to perform Salaat at his home. This ruling is based on another Hadith. Rasulullah (sallallahu alayhi wasallam) had granted permission to another blind Sahaabah to perform Salaat at home. As far as Hadhrat Abdullah Ibn Umm-e-Maktoom (radhiyallahu anhu) was concerned, despite the inconvenience, he was able to attend the Musjid, and he was doing so prior to asking for the ruling, hence Rasulullah (sallallahu alayhi wasallam) instructed him to attend the Musjid.