Manava Dharmashastra 3.253

3.253

bhakṣayitvā tu taṃ piṇḍaṃ sutaṃ putraṃ sūte janayati | medhā grahaṇaśaktiḥ tayā samanvitaṃ yuktam | 'sattvaṃ' nāma guṇaḥ sāṅkhyeṣu prasiddhaḥ dhairyeotsāhādidyotyastadyuktam |

Medhātithi’s commentary (manubhāṣya):
Having eaten the said ball, ‘she brings forth’—gives birth to—‘a son.’

‘Inteligence’—the faculty of grasping things; the child is endowed with this.

‘Suttra,’ ‘goodness,’ is an attribute postulated by the Sāṅkhyas; and its presence is indicated by firmness, courage, and such other qualities—(263).