Manava Dharmashastra 4.54

4.54

khaṭ‌vāsthaḥ adhastādvahnidhānīṃ na kuryāt | upadhānaṃ sthānam | 'avalaṅghanam' utplutya gamanam | pādataḥ utplutasya pādau yena tadupari syāttathā na kuryāt | prāṇābādhaṃ prāṇapīḍākaramatiśramavegāgamanādi nācaret |

He shall not place fire under himself; nor shall he step over it; he shall not place it under his feet. He shall not do anything dangerous to life.—(54)

Medhātithi’s commentary (manubhāṣya):
While lying upon his head, he should not place the fire-pan underneath it. ‘Upadhāra’ means placing.

‘Stepping over’—passing along—after having jumped over it.

‘Under his feet;’—ie., he shall not place it in a place where he might put his foot upon it.

‘Anything dangerous to life’—such as too laborious work, or running with too much force, and so forth; these he should not do.—(54).

This verse is quoted in Mitākṣarā (on 1.137);—and in Aparārka (p. 181).

Comparative notes by various authors
Āpastamba Dharmasūtra (1.16.21).—‘He shall not place the fire on the bedstead.’

Do. (1.12.6).—‘He shall not pass between the fire and the Brāhmaṇa.’

Viṣṇu (37.36).—‘He shall not cross over the fire.’

Yājñavalkya (1.137).—‘He shall not cross over the fire.’