Manava Dharmashastra 1.112

1.112

dārāṇāmadhigamanaṃ bhāryāsaṅgrahaḥ | vivāhānāṃ brāhmādīnāṃ tatprāptyupāyānāṃ ca lakṣaṇaṃ svarūpādhigamane hetum | mahāyajñāḥ pañca vaiśvadevādyaḥ | śrāddhasya pitṛyajñasya kalpo vidhiritikarttavyatā | ‘para’ grahaṇaṃ ‘śāśvata’ grahaṇaṃ ca vṛttapūraṇārtham | eṣa tṛtīyādhyāyarthaḥ |

The taking of wife,—the definition of the several forms of Marriage,—the method of the Great Sacrifices,—the eternal regulations relating to the offering to Pitṛs. — (112)

Medhātithi’s commentary (manubhāṣya):
‘Taking of wife,’—the accepting of a wife in marriage;—‘the definition’—i.e., the means of distinguishing the exact character—‘of marriages,’—such as the ‘Brahma’ and the rest, which form the means by which the wife is taken.—‘The great sacrifices’—the five offerings of the ‘Vaiśvadeva’ and the rest.—‘The regulations,’ rules, method, relating to śrāddhas, ‘offering to the Pitṛs.’

The terms ‘para,’ ‘excellent’ (in verse 111), and ‘eternal’ (in 112) only serve to fill in the metre.

All this forms the subject-matter of discourse III.—(112)