Our Lord! Impose not on us that which we have not the strength to bear, grant us forgiveness and have mercy on us. You are our Protector. Help us against those who deny the truth. Qur'an (2:286).
Hadith
Abdullah bin Amr bin Al-as (May Allah be pleased with them) reported: A man asked the Messenger of Allah (PBUH): "Which act in Islam is the best?" He (PBUH) replied, "To give food, and to greet everyone, whether you know or you do not." [Bukhari & Muslim]