He, sallallaahu ‘alayhi wa sallam, warned his wives against minor sins:

As-Sindi said: “The term, “beware of insignificant [minor] sins” refers to sins that people deem as insignificant and thus commit them without giving heed to them. The term, “there is an angel assigned by Allah to record it” means that these sins are (though insignificant in the sight of man) yet they are great in the sight of Allah since He allocated an angel specially to record them.”