Manava Dharmashastra 3.43

3.43

pāṇigrahaṇaṃ nāma gṛhyakāroktaḥ saṃskāraḥ savarṇāsu samānajātīyāsūhyamānāsūpadiśyate śāstreṇa vidhīyate, kartavyatayā pratipādyate | asavarṇāsu yadudvāhaka rma tatrāyaṃ vakṣyamāṇo vidhijñeyaḥ |

Medhātithi’s commentary (manubhāṣya):
The rite called ‘taking the hand,’ as described by the authors of Gṛhyasutras, has been ‘prescribed’—laid down, mentioned by the scriptures as to be performed—‘in the case of girls of the same caste,’ being married.

‘In the case of girls of different castes’ being married, the following is ‘to be known as the right procedure.’—(43)