Mathayo 6 : 3 Matthew chapter 6 verse 3

Amin, nawaambieni, Wamekwisha kupata thawabu yao. Bali wewe utoapo sadaka, hata mkono wako wa kushoto usijue ufanyalo mkono wako wa kuume;
soma Mlango wa 6

But when you do merciful deeds, don't let your left hand know what your right hand does,