Ashtangasamgraha 9.116

9.116

hitāhāravihārāṇāṃ sadācāraniṣeviṇām |

lokadvayavyapekṣāṇāṃ jīvitaṃ hyamṛtāyate ||

ṣaṣṭikāḥ śālayo mudgā yavāḥ sarpiśca jīvanam ||

For those who take wholesome food and conduct, who practice good behavior,
and who have regard for both worlds, life indeed becomes like nectar.
Ṣaṣṭika rice, śāli rice, mung beans, barley, and ghee promote vitality.