Astanga Hrudaya
अस्थ्नो मज्जा ततः शुक्रं शुक्राद्गर्भः प्रजायते। कफः पित्तं मलाः खेषु प्रस्वेदो नखरोम च॥६३॥
majja (bone marrow) gets formed, then the sukra i.e. semen (from bone marrow), from semen the garbha (embryo) gets formed Tissue excreta: Kapha, pitta, kha mala (the waste products of the external srotas) sweda (sweat),nakha (nails) and roma (body hair),
english translation