Is the noble Hadith: "Leave that which makes you doubt for that which does not make you doubt" a directive to abandon all doubt absolutely, or is it specific to dubious religious matters, and the lawful and unlawful only?

The command mentioned in the Hadith: "Leave that which makes you doubt for that which does not make you doubt," pertains to ambiguities in religious matters such as what is permissible (halal) and forbidden (haram), and what is a Sunnah and what is an innovation (bid'ah) in words and deeds. It is similar in meaning to the Hadith: "Whoever guards himself against doubtful matters has indeed acquitted himself with regard to his religion and his honor." It has no relation to purely worldly affairs.