Reference for Ibn Nujaym

Can I get the reference for Ibn Nujaym’s opinion on Wa’d being legally enforceable, had a look in al-Bahr al-Ra’iq but couldn’t find it. Jzk

Assalaamu alaykum,

There is a short discussion in Ashbaah wal Nazair on how Wa’d can become binding due to haajah or when it is mu’allaq.

Jazakumullah khairah