Matsya Purana 208.6

208.6

ārādhayati sāvitrīṃ lakṣito'sau dvijottamaiḥ.
siddhārthakairhūyamānāṃ sāvitrīṃ pratyahaṃ dvijaiḥ .. 208.6 ..

"In the country of Madra there was in ancient times a king named Śakala Aśvapati With the object of begetting progeny he began to adore Sâvitrî The Brâhmanas began to pour offerings of white sesamums into the fire daily, when ten months passed and Sâvitrî Devi became pleased and appeared before the king, and said 'King! you are my constant devotee I shall give you a progeny A beautiful daughter will be born to you by My favour' Saying so She vanished, and afterwards Mâlatî, the virtuous queen of that king, gave birth to a daughter handsome like Sâvitrî The king then said to the Brâhmanas This daughter has been born by the favour of Sâvitrî and she should therefore be named Sâvitrî'—5 11