Dua when slaughtering Udhiya on behalf of others
اللّهُمَّ تَقَبَّلْ مِنْ (فلان)
اللّهُمَّ تَقَبَّلْ مِنْ (فلان)
Allahumma taqabbal min [name]
Translation
O Allah, accept this on behalf of [name].
When to recite
Recited when slaughtering an animal on behalf of another person during Udhiya.
Source / Reference
Muslim 3/1557