Skandapurana 5.161.46

5.161.46

guhyaṃ divasanāthāya nābhiṃ dvādaśa mūrtaye ..
bāhū ca padmahastāya hṛdayaṃ tīkṣṇadīdhite .. 46 ..

“to the Lord of Day” for the private parts; “to the Twelve-formed One” for the navel; / “to the Lotus-handed One” for the arms; and “to the Sharp-rayed One” for the heart;