Teaching of all The Buddhas:

sabba papassa akaranam, kushalassa upsampada.

sa chittam pariyodpanam etad buddhanusasanam.

Morality, concentration of mind and purity of mind are common to all faiths, all religions. For morality, one-pointed concentration of a wholesome mind, kusala cittassa ekaggatā, is necessary which means the mind should be free from craving and aversion. The Buddha gave a simple technique wherein one concentrates one’s mind on the incoming breath and the outgoing breath, keeping one’s attention at the tip of the nose (nāsikagge) or just below the nostrils above the upper lip (uttaraoṭṭhassa vemajjhappadese). When one practises in this way, the mind becomes sharp and starts feeling sensations in this area. As a meditator starts observing the realities within, he discovers realities that the Buddha discovered. This cause-and-effect relationship was an unparalleled discovery of the Buddha. Imasmiṃ sati idaṃ hoti, imasmiṃ asati idaṃ na hoti. If this (cause) is present then that (result) comes, if this (cause) is not present then that (result) does not come. In paṭicca-samuppāda, the Buddha explains saḷāyatana paccayā phassa, phassa paccayā vedanā, vedanā paccayā taṇhā-dependent on the six sense doors contact arises, dependent on contact sensations arise and dependent on sensations craving and aversion arise.

….simply dhamma