Abu Dharr reported: The Messenger of Allah, peace and blessings be upon him, said:
لاَ تَحْقِرَنَّ مِنَ الْمَعْرُوفِ شَيْئًا وَلَوْ أَنْ تَلْقَى أَخَاكَ بِوَجْهٍ طَلْقٍ
Do not regard any good deed as insignificant, even meeting your brother with a cheerful face.
Source: Sahih Muslim
ruhaniqalb 