Musnad Abu Ya'la al-Mawsili 117:199

Abu Kurayb Muhammad ibn al-Ala narrated to us, Mu'awiyah ibn Hisham narrated to us, Minhal ibn Khalifah narrated to us, from Thabit, from Anas, who said: The Prophet of Allah (peace and blessings of Allah be upon him) narrated a hadith, and we did not rejoice at anything since we knew Islam more than we rejoiced at it. He said: "Indeed, the believer is rewarded for his removing of harm from the road, and for his guiding to the path, and for his expression regarding the mute, and for the gift of milk. Even that he is rewarded for the item that is tied in his garment, so he touches it and his hand misses it."