With regards to the Adhkaar is it permissible to recite them as much as I want and will I get more reward for this? For example the Prophet صلى الله عليه وسلم would make Istighfar hundred times a day and in another Hadith it came that he did it seventy times. Is it permissible to make Istighfar more than that or is this contradicting the Sunnah and can come under sin or Bidah?