What would be a suitable antonym for 'Usury'?

• Usury (Uncountable noun)
English Meaning: the practice of lending money to people at unfairly high rates of interest
Bangla Meaning: সুদখোরি; সুদের কারবার; কুসীদ ব্যবহার; চড়া সুদ। a usury transaction; a usury rate of interest.

Synonyms: Moneylending (টাকা ধার ধেয়া), Interest (সুদ), Exploitation (শোষণ করা), Stealing (আত্মসাৎ করা)।

Antonyms: Generosity (উদারতা), Unselfishness (নি:স্বার্থ), Honest (সৎ), Benevolent (পরোপকারী), Righteous (ন্যায়পরায়ণ)।

Example Sentence:
1. He used to practice usury frequently.
2. Delaware wasted no time in trashing its usury law as well.

Source: Website Lecture.