Manusmriti

siva.sh/manusmriti/9/121

उपसर्जनं प्रधानस्य धर्मतो नोपपद्यते । पिता प्रधानं प्रजने तस्माद् धर्मेण तं भजेत् ॥ १२१ ॥

sanskrit

The representative (the son begotten on the wife) is not invested with the right of the principal (the eldest brother to an additional share); the principal (became) a father on the procreation (of a son by his younger brother); hence one should give a share to the (son begotten on the wife of the elder brother) according to the rule (stated above).

english translation

upasarjanaM pradhAnasya dharmato nopapadyate | pitA pradhAnaM prajane tasmAd dharmeNa taM bhajet || 121 ||

hk transliteration by Sanscript