Narrated Mu’adh (rad):

He said: “Guard against the three things which cause curse (i.e.) defecating at the watering places, on the roadbeds and in the shades.” [Reported by Abu Dawud]

زَادَ أَبُو دَاوُدَ, عَنْ مُعَاذٍ: { وَالْمَوَارِدَ } [1]‏ .‏