Jabir bin 'Abdullah said that:
We were with the Prophet (ﷺ), and he drew a line (in the sand), then he drew two lines to its right and two to its left. Then he put his hand on the middle line and said : 'This is the path of Allah. Then he recited the Verse: And verily, this (i.e. Allah's Commandments) is My straight path, so follow it and follow not (other) paths, for they will separate you from His path..."
Arabic/English book reference: Vol. 1, Book 1, Hadith 11