Skandapurana 6.3.42.5

6.3.42.5

tāpasī tasya bhaginī yājñavalkyasya dhīmataḥ .
sā saptame'pi varṣe ca vaidhavyaṃ prāpa daivataḥ .. 42.5 ..

That wise Yājñavalkya had an ascetic sister. / Through destiny, she became a widow even in her seventh year.