What is the meaning of (for he will have, by then, removed himself from the Fire) in the context of the hadith about the creation of the son of Adam upon three hundred and sixty joints?

The phrase "فإنه يمسي يومئذ وقد زحزح نفسه عن النار" (he will, on that day, distance himself from the Fire) is taken from a Hadith in Sahih Muslim (1007) narrated by Aisha (may Allah be pleased with her). Its meaning is that the human body has 360 joints (salamah), and this is a great blessing that necessitates daily gratitude. Gratitude is of two degrees: an obligatory one, fulfilled by performing the fard (obligatory duties) and avoiding the haram (prohibited acts), and a desirable one, fulfilled by performing the nawafil (supererogatory acts). So, whoever renders thanks for this blessing has distanced himself from the Fire, meaning he has moved himself away from it and freed himself from the consequence of ungratefulness. As for whoever is heedless and does not show gratitude, he has exposed himself to the punishment of Allah.