Concept:The 10th Hadith teaches that Allah is pure and accepts only what is pure, linking acceptance of supplication to lawful living.Explanation:The Hadith mentions a traveller who prays with raised hands, but his food, drink, and clothing are from unlawful sources.It then asks how such a prayer can be accepted.Therefore, avoiding forbidden things is a condition for prayers being accepted.Answer:C. abstinence from forbidden things is prelude to accepting prayers