Then We made that zygote a hanging mass (clinging to the uterus like a leech). Then We developed that hanging mass into a lump, looking chewed with teeth. Out of this chewed lump We built a structure of bones which We clothed with flesh (and muscles). Then (changing him) into another form We developed him (gradually) into a new creation. Then Allah brought (him up into a strong body), Allah — the Best of creators.