Using the miswaak increases the reward of the salaah seventy times.

Submitted by Mohammed Gilani on

"عن عائشة رضي الله عنها قالت قال رسول الله صلى الله عليه وسلم: "فضل الصلاة التي يستاك لها على الصلاة التي لا يستاك لها سبعين ضعفا

Sayyidatuna Aaishah reports that Sayyiduna Rasulullah said, “The salaah performed after making miswaak is seventy times more virtuous than the salaah performed without making miswaak.” 

Reference: 

  • Mustadrak Alas Saheehayn lil Haakim