捫〔扪〕 mun⁴ {mén}

1. lay hands on
2. to cover

捫心無愧〔扪-无-〕 mun⁴ sam¹ mou⁴ kwai³ {mén xīn wú kuì}

lit. look into one's heart, no shame (idiom); with a clear conscience

捫心自問〔扪--问〕 mun⁴ sam¹ zi⁶ man⁶ {mén xīn zì wèn}

1. to ask oneself honestly
2. to search in one's heart