Paithinasidharmasutra 3.7: Kṛtyakalpataru · Smṛtiratnākara

3.7

kāmaṃ tu pāpīyase dadyād daśa ity eke | na jyāyasīṃ vṛddhim upādadīta | na tv eva kanīyasīm

If he so wishes, he may give to a worse man ten [percent], say some. He should not take higher interest, nor indeed a lesser one.

He may (lend) to a lower man at ten (per cent), say some; he should not take higher interest, nor lower.