Apastambasmriti 3.5

3.5

bālo vṛddhastathā rogī garbhiṇī vā'pi pīḍitā
teṣāṃ naktaṃ pradātavyaṃ bālānāṃ praharadvayam

A child, an old person, likewise a sick person, or an afflicted pregnant woman— / to them the evening meal should be given, and to children after two watches [of the day].