Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
quran:56:6

And become dust dispersing.  

so that they become a scattered dust (the second idh, ‘when’, is a substitution for the first idh),
القرآن:٥٦:٦

فَكَانَتْ هَبَاءً مُنْبَثًّا  

{فكانت هباءً} غبارا {منبثا} منتشرا، وإذا الثانية بدل من الأولى.