True to her/him/your/ words
در تاییدفرمایش ایشون
Also: as good as one's word
طبق قول یا وعده ای که داده بود
True to his word he signed the executive order which bans the vaccination passports
You were as good as your word/were true to your word and haven't said anything inappropriate since then
طبق قول و قرار