Sunan Ibn Majah
2277
Sahih+2

It was narrated from 'Abdullah bin Mas'ud that :Xthe Messenger of Allah (ﷺ) cursed the one who consumes usury, the one who pays it, those who witness it and the one who writes it down

SahihAl-Albani
SahihMuhammad Fouad Abd al-Baqi