He was a Brahmachari from his boyhood and (therefore) as soon as his mind felt the influence of desire, his vital fluid dropped down. The Rishi held it in a Drona (water-pot).
तस्यां संसक्तमनसः कौमारब्रह्मचारिणः। चिरस्य रेतश्चस्कन्द तदृषिोण आदधे॥