What is the ruling on dealing with a notary public who drafts a loan contract in exchange for mortgaging bonds, without mentioning the interest therein, and what is the ruling on the money earned from assisting the notary public in this transaction?

Borrowing with interest (riba) is forbidden, as is assisting in it. Bonds are usurious loans, forbidden whether in terms of issuance, purchase, or trading, and regardless of whether they have interest, zero-coupon, or prizes. One must repent and dispose of what resulted from this forbidden assistance by distributing it to the poor or spending it on general Muslim welfare, while advising the notary public not to authenticate forbidden transactions.