Matsyapurana 48.35

48.35

ayaṃ tu me mahābhāga garbhaḥ kupyedbṛhaspate
auśijo bhrātṛjanyaste sopāṅgaṃ vedamudgiran //

Sûta said:—In the days gone by, there was a great sage, named Uśija, and Mamatâ was his wife. Bṛihaspati, the younger brother of Uśija, entertained a desire to enjoy in the company of the latter's wife. Mamatâ, understanding the intentions of Bṛihaspati, told him not to think of anything of the kind, as she was bearing a child to his brother; and added: “O! Bṛihaspati, the child in my womb will get angry, for being

of the seed of Uśija, thy brother, he knows all the Vedas [and will not allow thy seed to fecundate in my womb]. Thou, O Bṛihaspati, art also one, whose seed never goes in vain. So do not approach me now. After I am delivered of this seed of Uśija, do as thou thinkest proper, O Lord.”—32-36.