The Noble Truth of the Origin of Suffering

What is the Noble Truth of the Origin of Suffering (samudaya-sacca)? In the Dhammacakkapavatana Sutta the Buddha taught that craving is Noble Truth of the Origin of Suffering (samudayasacca).
In Nidana Vagga Samyutta the Buddha taught that the dependent origination is also samudaya-
sacca. So ignorance (avijja), craving (tanha), clinging (upadana), volitional formations (savkhara),
and kammic force (kamma) are all samudaya-sacca. In short, all wholesome kammic forces
that can lead to renewed existence and all unwholesome kammic forces are samudaya-sacca. In theSacca Vibhavga the Buddha taught samudaya-sacca in five ways:
1. Craving (tanha) is samudaya-sacca.
2. The ten defilements (greed, hatred, delusion, conceit, wrong view, doubt, sloth, restlessness,
lack of moral shame, lack of moral dread) are also samudaya-sacca.
3. All unwholesome states (akusala dhamma) are samudaya-sacca.
4. All unwholesome states and three wholesome roots (alobha, adosa, amoha) that can lead to
renewed existence are samudaya-sacca.
5. All wholesome states that can lead to renewed existence and all unwholesome states, or all
wholesome kammic forces that can lead to renewed existence and all unwholesome kammic
forces are samudaya-sacca.
Both dukkha-sacca dhammas and samudaya-sacca dhammas are objects of vipassana insight
knowledge, so if you want to practice vipassana to make an end to suffering, first you should try to understand them.