672
Śrīmad-Bhāgavatam
[Canto 3, Ch. 16]
TRANSLATION
Lord Brahmā continued: Those two principal doorkeepers of the Personality of Godhead have now entered the womb of Diti, the powerful semina of Kaśyapa Muni having covered them.
PURPORT
Here is clear proof of how a living entity coming originally from Vaikuṇṭhaloka is encaged in material elements. The living entity takes shelter within the semina of a father, which is injected within the womb of a mother, and with the help of the mother's emulsified ovum the living entity grows a particular type of body. In this connection it is to be remembered that the mind of Kaśyapa Muni was not in order when he conceived the two sons, Hiraṇyākṣa and Hiraṇyakaśipu. Therefore the semina he discharged was simultaneously extremely powerful and mixed with the quality of anger. It is to be concluded that while conceiving a child one's mind must be very sober and devotional. For this purpose the  Garbhādhānasaṁskāra  is recommended in the Vedic scriptures. If the mind of the father is not sober, the semina discharged will not be very good. Thus the living entity, wrapped in the matter produced from the father and mother, will be demoniac like Hiraṇyākṣa and Hiraṇyakaśipu. The conditions of conception are to be carefully studied. This is a very great science.
TEXT 36
तयोरसुरयोरद्य तेजसा यमयोर्हि वः । आक्षिप्तं तेज एतर्हि भगवांस्तद्विधित्सति ॥३६॥
tayor asurayor adya   tejasā yamayor hi vaḥ   ākṣiptaṁ teja etarhi   bhagavāṁs tad vidhitsati
tayoḥ —of them;  asurayoḥ —of the two  asuras ;  adya —today;  tejasā —by the prowess;  yamayoḥ —of the twins;  hi —certainly;  vaḥ —of all you demigods;  ākṣiptaṁ —agitated;  tejaḥ —power;  etarhi —thus certainly;  bhagavāṁ —the Supreme Personality of Godhead;  tat —that;  vidhitsati —desires to do.
TRANSLATION
It is the prowess of these twin  asuras  [demons] that has disturbed you, for it has minimized your power. There is no remedy within my power, however, for it is the Lord Himself who desires to do all this.