Sayyiduna Ibn Mas'ud (may Allah be pleased with him) said: "The example of sins that are regarded as trivial is like that of travellers who stopped in a barren land. They had food with them that could only be prepared with fire, so they dispersed: one brought a piece of dung, another brought a bone, and another brought a stick, until they had gathered enough to prepare their food. Likewise, the one who commits sins regarded as trivial tells one lie and commits one sin, and keeps gathering in this way, until perhaps Allah will throw him on his face into the fire of Hell."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 8764