说到做到

说到做到 [shuō dào zuò dào]

1. ■ suit the action to the word; act on what one says; act as one says; be as good as one's word; be truthful in speech and firm in action; do what one says; live up to one's words; match one's deeds to one's words; match one's words with deeds; One's deeds square with one's words; practise what one preaches; do whatever one professes:

这次他可不是闹着玩的， 他说到做到。 This time he wasn't fooling; he meant business.